Windows 10: Windows update kb5004237 causing critical error.

My moms computer was being buggy, so she restarted it. Upon restarting, the screen was black for a moment before saying "Hi" and then "This will take a few minutes"After those few minutes or whatever went by, behold, the start menu doesn't work, says critical error. Wifi does not work either. Drives are not being recognized, i can't connect a usb or my phone to it to move files onto it.I opened cmd as admin via task manager, but using wusa /uninstall KB:5004237 just gives me an error because it's some kind of protected update, and trying to uninstall it from appwiz.cpl doesn't even give an opt

:)

 

Critical Error Popup

Hi QUENDALEWARD,

Corrupted system files may be the possible cause why you received a critical error. To provide you the accurate resolution, kindly answer the following questions:

• Have you made any recent changes prior to this issue?
• What is the exact error message you received?
• What troubleshooting steps have you done so far?

Meanwhile, I suggest that you follow the steps in this article on how to troubleshoot
Start menu.

Keep us posted if you need further assistance.

 

KB5004237 will not install!

Three out of my four computers have installed KB5004237 without any problems - the remaining one stalls at 20%, and throws up error 0x800f081f.
I have run sfc + dism + the update trouble-shooter to no avail.
It would seem that I am missing certain data/ previous update from what I can gather. Is this a known problem? and is there a starting point for me to try.
Windows update suggests that I am up to date.
Any help appreciated - thanks.
C
Windows 21H1 (19043.1083)

 

windows 10 critical update

Hi Stacee,

It is possible that a black screen may occur due to critical system error or corrupted system file. To assist you better, we'd like to gather more information:

• Are you getting any error messages?
• Have you tried booting up your computer in Safe Mode?
• Could you tell us what troubleshooting steps have you done so far?

In the meantime, we suggest that you follow the steps in this article on how to troubleshoot black
screen error. You can choose which best describes your issue.

Let us know if you need further assistance.