Blue screen of death after installing sp3 on Dell Optiplex 755
Symptoms : After installing sp3 and restarting… the windows boot screen starts for a short while, turns black, then returns with a blue screen of death.
Cause: SP3 installs two updated usb drivers that causes Windows to crash, the files are windows\system32\drivers\usbehci.sys and windows\system32\drivers\usbport.sys
Fix:
1st - you have to get into windows somehow - if you have a ps2 keyboard port, then disconnect all usb devices and connect a ps2 keyboard, and then boot the computer. Computer will boot with no problems, and you can replace those 2 files with older versions.
If that’s not possible, then you’ll need to transplant the drive to another computer and access the drive to change those 2 files.
Alternatively - use a BartPE disk, or Linux CD to access the drive.