My win 8.1 pc died after the fan control was accidentally disengaged. I replaced the cpu and the video card while I was at it, going from nvidea to amd.
The pc booted up ok, I installed the amd drivers, rebooted. Then I uninstalled all the nvidea software.
Now when I boot, there is some kind of loop going on after the initial blue window sequence. The screen is black but some screen icons flicker repeatedly and there is a mouse cursor.
I cannot get it to boot in safe mode to try to repair this. I made a recovery disk with my other 8.1 machine but it doesn't give me startup settings. The command line from the recovery disk also seems unable to set any safe mode flag.