A 2012 Aspire, part of a series of personal computers by Acer Inc. aimed at the casual household user or for small business use.

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Acer aspire 5750-6842 - Windows failed to start

It says for me to contact the system administrator or computer manufacturer for help file / Windows system32 config system status 0 xc000021a system restarting file is missing or corrupt

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Windows 7, 8.1, or 10?


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1 Answer

Chosen Solution


Try staring the laptop in 'safe mode' and selecting the option as outlined below.

Here is the procedure:

Restart the computer

Wait for the computer to complete the POST process (Acer appearing on your screen)

Quickly press the F8 key repeatedly until you see a list of boot options available. (Between the Acer screen and the Windows starting screen. If you start too early the laptop will beep, just release the F8 key for a few seconds and start tapping it again. If you are to late and the starting Windows screen appears shutdown the laptop by holding the power button until it shuts down and then start again. It is all the the timing you only have a small window of opportunity to access the advanced startup options menu. That is why you should tap F8 very quickly

Choose Last Known Good Configuration (your most recent settings that worked)

Press Enter

Wait for your computer to boot into this mode all the way to the Windows desktop.

Once it is there, wait for the HDD activity to settle down a bit, (the HDD light should stop being on continuously) and then shutdown the laptop in the normal manner from the desktop.

Once the laptop has shutdown completely restart the laptop and see if it starts normally.

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