The Dell Windows Reinstallation Guide is an unofficial set of installation guides written and maintained by an individual Philip Yip. To support the running costs of this site, as well as the costs of test hardware needed to keep the guides up to date. Please consider leaving a donation or clicking on the affiliate link if you are planning on buying Office or a SSD Upgrade for your system anyway. I'd like to thank you in advance for leaving any donations or clicking on the affiliate links. Written in Scotland , Great Britain (GB), , United Kingdom (UK) and hopefully soon to be part of Canada, Australia, New Zealand and the United Kingdom (CANZUK).

Dell F12 – UEFI PreBoot Diagnostics

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Tutorial Video

Written Guide

If you have a problem such as a Boot Issue or a recurring Blue Screen.

It is always best to run diagnostics from a systems UEFI BIOS as it allows one to differentiate between problems caused by hardware failure and software issues. To access Dell UEFI Preboot diagnostics power down your Dell and tap [F12] repeatedly when powering it up. This will access the Boot Menu:

The Boot Menu will show:

Press the [↓] key until Diagnostics is highlighted and press [Enter]:

The basic diagnostics test will now begin:

You will have to select [Yes] or [No] when asked whether or not you see the colour bars:

Once the basic tests complete, select Yes to run the extended tests:

In my case, my system is healthy so all the tests passed as expected so I can press OK. If you have an error message it will display.

The most common are:

  • 2000-0142 – the HDD/SSD has failed
  • 2000-0146 – the HDD/SSD has failed
  • 2000-0123 – the RAM has failed

You can reseat these and then try again in case the cables/connections are loose. If you have another error code confer with the Reference Table of ePSA, PSA Error Codes and Troubleshooting Steps

Select Exit:

Then select OK at the prompt. The computer will now restart:

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The Dell Windows Reinstallation Guide is an unofficial set of installation guides written and maintained by an individual Philip Yip. To support the running costs of this site, as well as the costs of test hardware needed to keep the guides up to date. Please consider leaving a donation or clicking on the affiliate link if you are planning on buying Office or a SSD Upgrade for your system anyway. I'd like to thank you in advance for leaving any donations or clicking on the affiliate links. Written in Scotland , Great Britain (GB), , United Kingdom (UK) and hopefully soon to be part of Canada, Australia, New Zealand and the United Kingdom (CANZUK).
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