Updating your (UEFI) BIOS and Optimising (UEFI) BIOS Settings for Windows 10 TH2


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Contents

  1. Determine your BIOS Revision using System Information
  2. Downloading the Latest BIOS Update
  3. Installing the Latest BIOS Update
  4. Determining if your system has a UEFI BIOS and SecureBoot and Notes Regarding the Windows 10 Upgrade
  5. Upgrading to a Solid State Drive and Altering the SATA Operation in the (UEFI) BIOS Setup

This guide has a complementary tutorial video.

1. Determine your BIOS Revision

Press [Windows] and [ r ] to bring up the run command:

msinfo

In the run box type in

msinfo32

Then press ok.

Take a note of the:

  • System Manufacturer
  • System Model
  • BIOS version and date

If its available (Windows 8 and later) also take a note of the:

  • OS Name
  • OS Version
  • BIOS Mode
  • SecureBoot State

Example 1

information ....

Take a note of the:

  • System Manufacturer – Dell Inc.
  • System Model – XPS 8300
  • BIOS version and date – A06

Also take a note of the:

  • OS Name Windows 10 Pro
  • OS Version 10240
  • BIOS Mode Legacy
  • SecureBoot State Unsupported

2. Downloading the BIOS update:

I do not recommend downloading the BIOS update from Dell Drivers and Downloads because sometimes BIOS updates require older BIOS as a prerequisite. e.g. the attempted update from A03 to A12 may state that A06 should be installed before A12. Dell Drivers and Downloads only lists the latest revision whereas the Dell FTP website lists all the revisions for the model.

If your system is not a Dell get the driver from your appropriate OEM for instance HP or Lenovo.

Example 1: XPS 8300

Press [Ctrl] and [ f ] on your browser this will open up the search on the page.

XPS8300

Type in the digits of your model number in the search box and press the right arrow until you find your model:

xps83002

Left click your model number:

xps83003

Scroll down to BIOS

bios12

You will see the latest revision at the top and all subsequent versions Dell released.

In the case of my XPS 8300 it already has version A06 and hence is up to date. So theres no need to attempt update.

Note the release date on this page may be slightly different to the date of the BIOS revision on system information because it takes Dell some time to test the update before they make it public.

bios13

If you have a BIOS revision lower than the latest version. For example on an Optiplex 760 which had BIOS revision A03 significantly out of date compared to the latest A16 release.

Select the download button and then select Save. Do not select run as you shouldn’t have background programs when running the BIOS update. In most cases it will not work anyway as the BIOS update needs elevated permissions. I advise moving the downloaded update from Downloads to the Desktop.

3. Installing the Latest BIOS Update

The BIOS update is a firmware update. This type of update updates the firmware for your system BIOS. You launch the BIOS update within Windows but the computer restarts and updates the BIOS within BIOS. Therefore once a BIOS update is applied it remains applied even if Windows is reinstalled.

As the BIOS update has the potential to change the functionality of your hardware, additional security measures are put into place to make sure that you actually want to run the BIOS update. Note An incorrect BIOS update has the potential to kill your computer entirely.

Before updating the BIOS its advisable to make sure all programs are closed.

Right click the BIOS update and select run as an administrator.

a06

The BIOS update will then launch and tell you what revision you have and what revision the BIOS flash is.

If you are up to date or equal to the BIOS revision or its unsupported as in the case of my XPS 8300 it will tell you and will not allow you to flash only giving you the option to quit:

xps8300a

If its supported it will allow you to select continue:

Updating the system BIOS 4

Click ok

Updating the system BIOS 5

The computer will then restart and restart the BIOS update.

DO NOT DISTURB THE COMPUTER DURING THIS TIME and certainly do not cut power. If you do then likely you will kill the computer entirely.

Once the computer loads into Windows some of the BIOS updates will re-launch automatically but then will tell youthat you have the latest version already so just click cancel. You may then delete the BIOS update from the Desktop.

Some BIOS updates may require perquisite BIOS updates as mentioned. Try to update the BIOS in the least number of steps.

4. Determining if your system has a UEFI BIOS and SecureBoot and Notes Regarding the Windows 10 Upgrade

For optimal performance Windows 10 TH2 should be clean installed using a UEFI BIOS with SecureBoot enabled if your computer has these technologies. The Bootable USB should be formatted as GPT partition scheme for the UEFI BIOS using Rufus.

So lets give a basic explanation of all these acronyms…

What is Basic Input Output System (BIOS)?

Basic Input Output System (BIOS) as the name suggests is the very basic Operating System embedded into your systems i.e. firmware. The BIOS setup allows you to change some of your hardware settings and to boot from installation media with a proper Operating System e.g. Windows 10.

What is Unified Extensible Firmware Interface (UEFI)?

Associated with BIOS is the Unified Extensible Firmware Interface (UEFI) which is essentially a modern more advanced version of BIOS that has increased functionality and additional security. Because of the strong connection and familiarity of end users to BIOS this is usually denoted UEFI BIOS and not just UEFI.

What is Master Boot Record (MBR)?

This is the legacy partition table associated with BIOS. It has the limitation of a maximum of 4 partitions and also a maximum drive capacity of 2 TB. Moreover because there is a single Boot Record if this becomes corrupt the Windows OS will be corrupt and need to be repaired from installation media (possibily resulting in data loss).

What is GUID Partition Table (GUID)?

This is the revised partition table and requires a UEFI BIOS. It allows up to 128 partitions and supports drives larger than 2 TB. Because this partition table can create a large number of partitions it does not restrict users like MBR and allows the Windows 10 OS to make both a primary and secondary Boot Record. If the primary Boot Record becomes corrupt it can easily automatically be fixed using the secondary boot record making it more robust.

What is SecureBoot and why Should I use it?

This is a firmware security technology and requires a UEFI BIOS. The advantages of SecureBoot are covered in this schematic. Essentially its a firmware protection feature when SecureBoot only Microsoft verified code is allowed to boot which means Windows 10 loads alongside its inbuilt security processes before any nasties get a chance to load. Conversely when SecureBoot is disabled the nasties may load before Windows disabling any inbuilt Windows 10 Security features from loading leaving your computer computer vulnerable to attack.

SecureBoot

Note although this guide is focusing on Windows 10, Linux Ubuntu, Linux Mint and Linux Fedora instalaltion media have all been updated to pass SecureBoot. Likewise utilities such as Acronis.

If your Computer came with Windows 8, Windows 8.1 or Windows 10 Preinstalled

All Windows 8 and later computers have a UEFI BIOS and both UEFI and SecureBoot should be enabled from the factory. You can confirm this by looking at your system information if your BIOS Mode is UEFI and your SecureBoot State is On you likely have Windows 8 64 Bit or later preinstalled and hence already have the optimal settings for proceeding with a Clean Install of Windows 10 64 Bit TH2. For such configurations you do not need to check your UEFI BIOS setup.

If your Computer was Downgraded to Windows 7 or is a Late Windows 7 System

If you had Windows 7 preinstalled instead of Windows 8 or later or manually Downgraded to Windows 7 yourself SecureBoot will have been Disabled as Windows 7 installation media was never updated past 2011 and hence not verified by Microsoft to pass SecureBoot. Moreover Windows 7 may be installed using the MBR partition scheme with the legacy BIOS setting applied.

If you have UEFI and SecureBoot enable both and install Windows 10 using the GPT partitions scheme.

Note there are a handful of early UEFI systems that have a UEFI BIOS without SecureBoot.

If your Computer is an Early Windows 7 System

It should be noted that systems have came preinstalled with Windows 7 as early as 2009. As a rule of thumb systems with a BIOS revision <2011 won’t have a UEFI BIOS and Windows 10 will have to be installed in MBR. There is a grey area for 2011 systems. If your system BIOS revision is >2011 and you don’t have these settings enabled you should check the BIOS setup to see if they are supported. SecureBoot will be disabled in systems that have Windows 7 loaded for instance as Windows 7 doesn’t support SecureBoot. I advise exiting the BIOS without saving changes so you can prepare a Windows 10 TH2 bootable USB with the appropriate settings on your current Windows installation. Once you have made the Windows installation media you can then adjust the BIOS settings to the optimal settings your hardware supports.

The (UEFI) BIOS Setup

To enter the BIOS setup Power Down your computer. Wait 10 seconds and power it up. Press F2 at the Dell BIOS Screen. Other OEMs may have a different key sequence.

1. Dell BIOS

Example 1 of an Inspiron 13 7347 BIOS. The Boot list mentions SecureBoot and UEFI. Both are enabled.

  • SecureBoot is Enabled (which means UEFI is enabled)
  • UEFI is Enabled
  • The Bootable USB should be formatted as GPT partition scheme for the UEFI BIOS. The system can take advantage of the GPT scheme and preboot security.

vlcsnap-2015-10-31-19h26m47s959

vlcsnap-2015-10-31-20h10m46s548

Example 2 of a Latitude E5510 BIOS. The Boot list mentions UEFI but not SecureBoot. UEFI is supported but secureboot isn’t.

  • There is no option for SecureBoot.
  • UEFI is enabled.
  • The Bootable USB should be formatted as GPT partition scheme for the UEFI BIOS. The system can take advantage of the GPT scheme but not the additional preboot security.

vlcsnap-2015-10-31-19h30m12s686

uefi

Example 3 of a XPS 8300 BIOS. The Boot list does not mention UEFI or SecureBoot. Both these technologies are unsupported.

  • There is no option for SecureBoot.
  • There is no option for UEFI.
  • The Bootable USB should be formatted as MBR partition scheme for the Legacy BIOS. The system cannot take advantage of the GPT scheme or additional preboot security.

xps83002

information ....

5. Upgrading to a Solid State Drive and Altering the SATA Operation in the (UEFI) BIOS Setup

The cost of large enough capacity Solid State Drives to use as a Windows Boot Drive is now economic and so replacement of your old mechanical Boot drive with a Solid State Drive is now recommended for systems with only one Hard Drive bay. This will give your system a marked difference in system performance.

For maximum performance its advised to upgrade to a 250 GB or superior Solid State Drive and to use this SSD as a Boot Drive with no additional caching. To determine how feasible this upgrade is on your system you should refer to your Service Manual or Owner’s Manual which instruct in the removal of the drive(s). This can again be found on Downloads.Dell.com I advise searching for en-us when on your models page. Most Dell systems are well designed so that accessing the HDD/SSDs is pretty straight forward.

enus

You can use the Crucial System Scanner to scan your system for compatible SSD upgrades. Some more details are available in Upgrading to a SSD Drive.

crucialsystemscanner

Once you have ordered your SSD ensure that you have Downloaded Windows 10 TH2 Installation Media and made the Bootable USB.

Once you have your SSD installed and your computer is back together you should check the SATA operation in your (UEFI) BIOS.

Power up your system and press [F2] at the Dell BIOS screen to enter the BIOS setup.

1

You will be taken to the main BIOS tab

vlcsnap-2015-10-31-19h24m43s840

Use the → arrow key to move to the advanced tab. Then press the ↓ key to take you down to the System Configuration and Press Enter.

vlcsnap-2015-10-31-19h24m51s011

On the advanced tab press the ↓ arrow key to move to SATA Mode. Press Enter to modify the category between AHCI and RAID or other options such as IRST. Use ↓ and ↑ to select your setting and once again press Enter.

Press [F10] to save changes and exit.

vlcsnap-2015-10-31-19h29m37s417

Select Yes when prompted to Save Configuration and Exit. If you are using a system with a single SSD Boot Drive you are now ready to install Windows 10 TH2 on your new SSD.

If you are using a system with multiple drives (SSD and HDD) before Windows installation boot from the Windows 10 TH2 installation media and Clean the HDD and the SSD to prevent an unwanted dualboot. See Cleaning up a Drive for more details. After doing this you should be ready to install Windows 10 TH2 on your new SSD. You may also want to Change the Location of Librariees (User Files) in Windows 10 TH2 after installation..

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62 thoughts on “Updating your (UEFI) BIOS and Optimising (UEFI) BIOS Settings for Windows 10 TH2

    1. Dear Sir,

      This is Hardosh Kumar,

      I changed laptops Hard Disk, and When I am trying to Instal Windows 7 or 8, after completion of Installation, When windows goin to setup Desktop, It show error in blue screen and shows error that Update BIOS, but I already have updated BIOS Version A11. I tried to update BIOS with A11 message is appearing can not flash BIOS with same version. I need to install Windows 7.

      Kindly suggest me What should I have to do.

      Before changing of Hard disk, I was using Windows 7.

      Thanks Alot

  1. i’ve windows 64 bit installed in my dell 1310…the problem is when i run phoenix winphlash a15..it gives error code 1275 the driver blocked from loading..can u pls help
    regards…

      1. I’m having a similar problem installing a11 bios with an optiplex gx620. I’ve already installed windows 7 64 bit. I can’t find in dep Winplash.exe to turn off, is there an alternative file for this machine?

      2. No you may need to perform the update in 32 Bit Windows. Maybe you will need to even go way back to Windows XP in order to run the BIOS update.

  2. Yep!!! I’ve already gone through that link…and did exactly what he said…and i m loggeinasadmin…and clicking the right file with right click….pls help me out..thnxxx

      1. ya dear it workwd with 32bit os…i need more help…i m having too much issues with my notebook…..
        1-mas storage controller missing…searched everywhere but failed to find….
        2-bluetooth neither detectable nor detecting any device…..driver installed from microsoft…made it visible…downloaded driver from dell support…but not installing….os system not supported error….
        3-when i start my notebook…a long beep sound blow….keep blowing untill i press f1…like cmos checksum error….changed cmos battery…flashed bios…from a10 to a15…but not helping
        pls takeme out of tese problems…thank u so much for ur help…..

      2. Now that the BIOS is updated you should be okay to install Windows 7 64 Bit. Dell don’t list Windows 7 64 Bit drivers but I have made an unofficial driver set which should work with your system:
        http://dellwindowsreinstallationguide.com/driver-sets/vostro-laptops/

        You should have a Dell Wireless 360 Bluetooth card but I’ll need hardware IDs to identify the wireless card and graphics card:
        http://dellwindowsreinstallationguide.com/downloading-drivers-checking-hardware-ids-and-downloading-and-installing-dell-system-drivers-in-the-correct-order/checking-hardware-ids-in-the-device-manager/

        This should resolve the software issues. As for the CMOS checksum error I would have advised updating the BIOS and changing the CMOS battery. I assume you put in a fresh CR2032 battery? Maybe try a second new one. A stupid question (but worth asking) is the battery in the right way? You may want to make a new thread on the Dell laptop general hardware forum for more advise on this issue:
        http://en.community.dell.com/support-forums/laptop/f/3518

  3. thanxx for your assistance..yesterday i went through this “http://o2micro-integrated-ms-mspro-controller.drivers.informer.com/download/5100” link….so after istalling this driver mass media controller driver problem and long beep problem on booting has been solved…but bluetooth problem still persists…i’ve installed bluetooth driver from dell…but not helping……having one more problem…i gave my notebook to a local repair centre..he theft wlan card from it…i checked on installing cmos batt….here in india it’s(model DW-1395) not available….i’ve samsung n150plus wlan+bluetooth card….whose socket is same as it….can i install that card in my dell….will it work….????

  4. ya i did it….i placed samsung n150+ wlan card(broadcom) and installed driver from samsug website….and it’s working like a charm….

  5. A comment on updating the BIOS post-upgrade to Windows 7 x64… A friend asked me to look at the laptop (Vostro 2510 running Windows XP). It would not boot past the splash screen – although I was able to get to the diagnostics partition and run enough diags to determine hard disk was not failing. I installed Windows 7 x64, (as a clean install but leaving the old files in place) and it all went well… Using some tips from here and elsewhere got most of the drivers updated. Went through all the patches. Getting “battery needs replacing” message in the notification bar, and also noted that A04 and A06 BIOS updates had battery management enhancements. So rather than advise they go back and buy a new battery – only to have it fail again, I thought I’d upgrade the BIOS. This is where the fun starts…

    After several attempts to run (the download file will run, but extracts the actual flash program to c:\windows\temp\winphlash, and the winphlash.exe is a 32-bit only app), I found a place to download the 64 bit versions of the installers. No matter what version I tried, it failed for various reasons.

    After giving it some thought – I thought perhaps I should boot into a 32 bit operating system and run through this again. Having used bootable images in the past, I had some ideas as to where to look – but this is BIOS after all and I don’t want to brick the system.

    Long story short, Microsoft has the Windows PE bootable environment for IT administrators in various versions of Windows. I first had to download the Windows AIK package for Win 7, then went through the steps on their walkthrough page to create a 32bit (x86) version of the bootable ISO image, burned it to a cd… booted to it… changed to c:\windows\temp\winphlash and ran winphlash.exe with absolutely no errors or problems.

    It’s a long, cumbersome way to get there – but now I’ve got a bootable Windows 7 WinPE image, and it’s all legit. No copyrights violated. The laptop is great – still could use a battery but that’s okay… Running A06 (latest) bios and seems to be working well at this point.

  6. hello I am having a Dell Optiplex 755 Desktop model & facing problem while updating the BIOS version, currently I am on A12 version & want to update to A23 version, I tried each n every procedure to update it i.e. by directly as Admin & also by using bootable flash drive, but none of the procedure works at all, also had many wasteful conversion from Dell community forum. But none of the procedure works at all.. Here I tell u the Error

    BIOS update failed
    could not fknd the firmware image in memory.

    This was the error i am getting all the time. please help me out

    1. I am the same person who tried to help you on the Dell Community Forums. Dell Chris-M has replied to your post. He says that your CMOS chip is possibility damaged and that you may need to replace the motherboard.

      Better to leave it as is for now.

  7. I have a Dell E5530 with Windows 7 Ultimate. About once a year the screen goes blank, then the computer does an automatic BIOS update. I never get a chance to save my work. I called Dell, and they said this should never happen. The computer works OK after these automatic updates, but it works even better if I go back to the default BIOS. Can anybody tell me what is going on? Is there some way to stop these automatic BIOS updates? Where are they coming from? Thanks.

  8. I have a dell Insprion 14 3000 series, trying to drop a drive running vista from a older work laptop. I got a ACPI error. How do I fix that, and get it to boot from the old drive.

    1. You won’t get it to boot as the systems will have a completely different storage controller. You could do a repair install using a Dell Windows Vista Reinstallation DVD however if the license is OEM even if you fix the install and get it to boot then you will run into Microsoft Product Activation Errors. Windows Vista is obsolete and the Inspiron 14 3000 series should run better with Windows 8.1 (it should have a Windows 8.1 OEM license).

      I assume the main reason you are inserting this hard drive is for data recovery and in that case I recommend you use a Linux Live distribution such as Fedora to perform data recovery with, see here:
      http://dellwindowsreinstallationguide.com/data-recovery-using-fedora/

  9. Hello, Inspiron N5010 after upgrading bios from A10 to A15 in the bios settings are locked, i can boot the system but nothing can be changed in bios,pop up show ”setup is locked ! enter the admin password into security – unlock setup to enable changes.” Running win xp (i have to run this os) i know is not recommended for this model. I try to downgrade bios version but dell don;t let me….What should i do…thak’s

    1. get the battery out of the motherboard and start your pc up… you wil get a message that the battery isn’t there and after conferming……. the system is blanc, and starts up without any bios password…

    1. A BIOS Update should not set a BIOS password. Regardless the point in a BIOS password is to prevent the system from being stolen…. I cannot help you change this; you need to contact Dell Technical Support, verify your identity and there may be a charge for them to give you a master password to unlock it.

  10. yes i tried not working, this is very wondrous, F12 working, everything ecept settings in bios
    i try also with logging passwords of users (i have 2 user + administrator user)

    1. Contact Dell if the system has warranty (after the warranty expires it may be costly to get support).

      You can also try dismantling the system and removing the CMOS battery to see if it resets the BIOS setup.

      Otherwise you may just want to leave it; theres usually very little need to change the settings in the BIOS setup.

  11. Thank you so much for all this information. I was about to toss my xps out the window haha ha. really Thank you i couldnt find info like this anywhere

  12. hi i have dell laptop 1525, i formatted it and installed a windows 7 installation for dell laptop 32 bit, everything wend fine i have A13 bios on it so i don’t know if i need to update it or not?
    Intel core 2 due 2 GHz
    and 2 GB ram
    200 GB HDD
    now my question is, after windows come up i have all drivers updated wireless working sound camera touch pad and even modem got the driver but there are 3 unfamiliar hardwares on the computer manger that i don’t know what are they, and Bluetooth is not working (no any driver installed on it during the windows 7 installation).
    what can i do?
    and if i need this pc only for some programming in c language and some hd movies to see (i have a hdmi output never tried it yet) is it enough? or should i buy more RAM? (i have another external HDD of 1TB so nvm the HDD).
    thanks,
    elad.

    1. You are best to create a new post on the Microsoft OS Forum as its hard to address questions on these comment pages:
      http://en.community.dell.com/support-forums/Software-OS/default.aspx
      Provide the hardware IDs of your wireless card and unknown devices:
      http://dellwindowsreinstallationguide.com/downloading-drivers-checking-hardware-ids-and-downloading-and-installing-dell-system-drivers-in-the-correct-order/checking-hardware-ids-in-the-device-manager/
      One of your unknown drivers will likely be the card reader. See my unofficial driver set here, you should upgrade to BIOS A17 and install the rest of the drivers in order:
      http://dellwindowsreinstallationguide.com/driver-sets/inspiron-laptops-windows-7/inspiron-1525-windows-7-32-bit/

      More RAM would help but the upgrade to a budget BX100 128-256 GB SSD (256 GB recommended but depends on your budget) would lead to better performance:
      http://uk.crucial.com/gbr/en/compatible-upgrade-for/Dell/inspiron-1525
      Theres not too much point getting a MX200 for this model as it doesn’t have the capabilities to take full advantage of the speed.

      1. thanks for fast replay,
        i saw that i have all drivers installed also the sd card reader and the wireless lan card and the 3g modem tochpad and camera only the bluetothe is missing but what are the other 2 devices?
        i dont know if i want to update the bios im afraid it will fuck the computer up
        thank you.

      2. Another question, now I have is windows 7 professional 32 bit should I upgraded bios on it and then upgrade to a 64 windows 7 Ultimae?
        Thanks in advance.

  13. i updated my bios to a11 from a07 but windows 10 set up still says that bios not supported… it said the same thing with a07… plz help.. thanks a ton in advance…

  14. Hi,

    Please help me.
    I have Dell Inspiron 14z 5423 with Windows 8.
    BIOS is A6, I downloaded BIOS A13. But when I run it by administrator user, my laptop is not run and I hold power button to shutdown my laptop.

    With A8, A10, A12 are the same.

    Thank you.

  15. I Want update the Bios of my dell inspiron 15 3000 series but my pc is not on the list of all the insipiron, the insipiron 15 is starting with 15 3520 going upwards

  16. Its latest BIOS is A11. The Get Windows 10 gives a warning on this model but the warning is nonsense and can be ignored.

    Once you have BIOS A11 you can upgrade to Windows 10 TH1 directly using the Windows 10 TH1 Media Creation Tool:
    http://dellwindowsreinstallationguide.com/upgrading-to-windows-10/
    Otherwise you can install Windows 10 TH2 beta or wait till Windows 10 TH2 is released on the main track (recommended):
    http://dellwindowsreinstallationguide.com/download-windows-10-technical-preview-iso/

  17. Inspiron 15R N5110 original bios version does not support windows 10
    company website says upgrading Ao9 to A15 may cause some devices to not work

  18. Dear sir
    I have dell inspiron n5110 and bios is a06 and whenever i tried to install window 8 it gives an error
    Suggest me can i install window 8 or window 10 on my laptop

  19. i have inspiron 14 3421. somehow i have the present win8.1 in legacy mode.
    so, i checked by going to bios set up – to see if my machine has uefi and secure boot.

    i found both options were available (uefi along with legacy; and secure boot enable/disble when i selected uefi)

    so, i am assuming, i will be able to select uefi, secure boot when i clean install win10 TH2. am i correct, philip?

    1. I have an Inpiron 14z 5423 that shipped with Windows 8 x64 installed on its 500GB HDD, using a 32GB mSATA SSD as a cache drive for Intel Smart Response and Intel Rapid Start Technology. I manually downgraded to a clean Windows 7 using an OEM Win7 x64 DVD and I left the caching setup the same. Disks are both GPT. In my current UEFI BIOS (latest, A13) settings I have the SATA setting set to Intel Smart Response, Intel Rapid Start Technology is set to enabled, and Secure Boot is disabled.

      I would like to do the following two things – replace the 32GB mSATA with a larger one and get a clean Win10 installation on the new SSD. I think I’ve read elsewhere the largest SSD this mSATA slot will recognize is 256GB, so I’d get a Samsung 850 EVO 250GB (I hope it’s dimensions are compatible?). I’ll leave the HDD for storage. With an SSD boot drive, caching will be unnecessary so I won’t need Intel Smart Response Technology software and in BIOS I should change the SATA operation to AHCI. Also I should enable Secure Boot. I’m less certain about the setting for Intel Rapid Start. Should I leave that enabled? I thought Intel says that it is helpful even in non caching setups?

      Also, do I have a chance at doing the clean install without upgrading to Win10 first? I made a Win10 USB with the media creation tool directly (not saving .iso and using Rufus) – it should be bootable for a GPT install? Also, I wonder if my Win8 product key is still embedded in my BIOS?

      Thanks for any answers

      1. The Windows 10 installation media will automatically input your product key from the UEFI BIOS, providing that the Edition matches, see here for details:
        http://dellwindowsreinstallationguide.com/download-windows-10-oem-and-retail-iso/
        No need to upgrade with the TH2 media, old documentation stating a mandatory upgrade refers to TH1 media.

        It should be compatible for a GPT install when the Media Creation Tool is used direct. Check the file format of the USB, if it is FAT32 it should be fine.

        See here for replacing the mSATA SSD. Parts-people list a 512 GB mSATA as compatible so my guess would be 256 GB isn’t the limit:

        http://www.parts-people.com/index.php?action=item&id=19393

        Enable SecureBoot and disable Legacy Roms. These settings will work best for Windows 10 TH2.

  20. i just tried updating my BIOS and it stopped on 21% (Verify), Stage – Programme EC. and it has been like that for over 2 hours now. please help me to do something about this. I just cant leave it like this for too long