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Dell Windows 7 32 Bit and 64 Bit PSP2 Reinstallation .isos – April 2016 Media Refresh

This page has been partially updated:

For systems with a Windows 8.x Pro OEM License with Downgrade Rights to Windows 7 Pro OEM or Windows 10 Pro OEM License with Downgrade Rights to Windows 7 Pro OEM or Windows 7 Pro OEM License see Download Dell Windows 7 64 Bit Reinstallation SP2 OEM .iso (April 2017 Media Refresh).

For Windows 7 Home Premium and Windows 7 Ultimate you can see the guide below however it is recommended you migrate to Windows 10.


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I slipstreamed the Convenience Rollup (Pseudo Service Pack 2), Internet Explorer 11, the latest Intel USB 3.0 Drivers, the latest Intel Storage Controllers and NVMe drivers into my multi-lingual 32 Bit and 64 Bit Dell Windows 7 Reinstallation .isos. For more details in their creation (advanced users see here).

N.B. In the past I had slipstreamed even more updates which made the .isos unnecessarily large and the additional updates I slipstreamed are available as new monthly security rollups (more details later). Installing the Monthly Rollup after the April 2016 install will bring your Windows 7 Clean Installation more or less up to date.


The set of Windows 7 Reinstallation 64 Bit PSP2 .isos contain most European Languages:

Dell OEM System Locked Preinstallation

These .iso images will install Windows 7 and apply Dell OEM System Locked Preinstallation (Dell offline BIOS based Product Activation) on eligible Dell systems. I explain the mechanism of System Locked Preinstallation SLP in my Unified Extensive Firmware Interface (UEFI) guide.

Eligible Dell systems should have shipped with a Dell Windows 7 COA affixed to the system. You should the Dell Windows 7 Reinstallation .iso which matches the Windows 7 Edition on the COA:

Dell Windows 7 Reinstallation .isos

These .isos are unofficial and hence are only available in the following unofficial location:


To alleviate installation issues due to incomplete downloads. The .iso checksums can be verified with Rufus (which we will use later to make the Bootable USB):


Rufus doesn’t need to be installed. Launch Rufus:


Select yes at the user account control prompt.


Select the load .iso icon:


Select your .iso and select open:


Select #:


This will give you the .iso checksums:


This will give you the various checksums and they should match the checksums below.

If they are different you will have an incomplete/corrupt download.

7 Home Premium x64 April 2016 (6,509,632 KB)

  • MD5: 07dce725176b48cd5dfed6753d700b3e
  • SHA1: 21887c23c12d8e499c4f2b271f1a18314c38f2a5
  • SHA256: 1368a61abca59c664fad3eeeb76a2b4c9b4a6302a6fd472c744ff22c3101e498

7 Professional SP2 x64 April 2016 (6,509,504 KB)

  • MD5: 0ffe8c1a5c82f8572f815a71b11b3f95
  • SHA1: d9e0d59e6fb346449269947a11faf02d85b72da4
  • SHA256: 869eefa9db026b6c791bef0f08a63e5b680215dd92eb4d3658cdb4bc7de35a8c

Newer Dell 6th Generation Intel Skylake systems may have an official .iso to download this officially from Dell see The Dell Skylake .iso. The Skylake .iso is slightly less up to date than my .isos but may have some additional drivers for Dell 6th Generation Intel Skylake systems.

7 Ultimate x64 April 2016 (6,510,208 KB)

  • MD5: 1f1c8987c829784542fc190883a04eaf
  • SHA1: c0f6423e058d1d46c8f1a29ffa1dc47b1140f3e5
  • SHA 256: 1b422de650f530a3d8cab735686f293f2884651ed6f46553e187c7f98f797782

7 Home Premium x86 April 2016 (5,139,392 KB)

  • MD5: 84d0ad6ce5607bb3f61299b71789ca98
  • SHA1: 5b5f6f93c0ff55b5dea89998ad8a4ba7dcb45343
  • SHA256: 363b6399296a4a456ea3d76d409be7c2f161a116f1fb3b03710cfdab96e77199

7 Professional SP2 x86 April 2016 (5,139,328 KB)

  • MD5: c527520ba307211a0dafb7441cd30af5
  • SHA1: 5b88659babe088715912ed98003a4acbb5a44142
  • SHA256: e3068844b88022f2ba0aae45b69b5dc79679a77a91f5c5a76294db4b21a65f64

I don’t have any other Windows 7 Editions such as 32 Bit Starter, 32 Bit Home Basic and 32 Bit Ultimate. These are relatively rare. If you need to install one of these Editions use the 32 Bit Professional .iso above and Create the Bootable USB. Then open the Bootable USB in Windows Explorer and delete the EI.cfg in the sources folder. Install the Edition of Windows 7 that you want and skip input of a Product Key. To activate use the Activation Backup and Restore (ABR) program.

Creating a Bootable USB

You will require a 16 GB USB Flash Drive.

Once you have the .iso and Rufus downloaded, launch Rufus:


Select yes at the user account control prompt.

The order in which you use Rufus is very important…


To the top select your USB Device.


Next although its at the bottom you must load the .iso:


Select the .iso you wish to make a Bootable USB from and select open:


If your SMBIOS is 2.7* or newer (a 2012 model or newer) then its preferable to install Windows 7 64 Bit using a UEFI Boot. For more details see my guide Unified Extensive Firmware Interface.

If your SMBIOS version is 2.5 or 2.6 or you are installing Windows 7 32 Bit your only choice is to use the less robust Legacy Boot.

* Some Business systems such as the OptiPlex/Latitude/Precision models with a SMBIOS version of 2.6 may also have a UEFI Boot if they have their latest BIOS Update.

For a UEFI BIOS you should select the partition scheme as “GPT partition scheme for UEFI”. FAT32 should automatically be selected. When ready select Start:


For a system without a UEFI BIOS use the MBR Partition Scheme for Legacy BIOS.


Select Ok to acknowledge that you are going to format the USB flash drive:


Rufus will now make the installation media.


Once its completed the task, the progress bar will be full and it will say Ready below it. You can now close Rufus. You have your Windows 7 Pseudo Service Pack 2 Reinstallation USB prepared:


Notes on Windows 7 Installation

To Install Windows 7 see my guide:

Monthly Security Update

Microsoft have been listening to user feedback on the annoyances of patching Windows 7.

They have started releasing Monthly Quality Rollups for Windows 7. The Latest one at this time of writing will give you all the Security Updates until the 8th of April 2017 and can be obtained from the Microsoft Update Catalog. I advise installing it immediately after clean installing Windows 7:


The Microsoft Update Catalog used to require Internet Explorer but has been updated so all browsers work with it.

Simply download the .msu file and install it then restart your computer when prompted.

Microsoft Security Essentials

The latest version of Microsoft Security Essentials for Windows 7 alongside its latest offline definition are available here. These can be installed post-installation after the latest Security Rollup:

Microsoft Security Essentials

http://mse.dlservice.microsoft.com/download/A/3/8/A38FFBF2-1122-48B4-AF60-E44F6DC28BD8/enus/amd64/mseinstall.exe (64 Bit English)

http://mse.dlservice.microsoft.com/download/A/3/8/A38FFBF2-1122-48B4-AF60-E44F6DC28BD8/enus/x86/mseinstall.exe (32 Bit English)

https://support.microsoft.com/en-gb/help/14210/security-essentials-download (All Languages)

Microsoft Security Essentials Latest .Dat

http://go.microsoft.com/fwlink/?LinkID=121721&arch=x64 (64 Bit)

http://go.microsoft.com/fwlink/?LinkID=121721&arch=x86 (32 Bit)


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