TdrDelay
Specifies the number of seconds that the GPU can delay the preempt request from the GPU scheduler. This is effectively the timeout threshold. The default value is 2 seconds.
TDR reg keys
so.. wonder if its sitting there waiting for 8k seconds now.
glad it was your friends PC and not your own, I was going to say don't let friends play in your registry.
think he best using win 10 installer to boot into safe mode and then change regedit value back toa default so PC will load. anything around 10 is way better than 8000
On another PC, download the
Windows 10 media creation tool and use it to make a win 10 installer on USB
change boot order so USB is first, hdd second
boot from installer, on 2nd screen after languages, choose repair this pc, not install
choose troubleshoot
choose advanced
choose start up options
hit the restart button
choose a safe mode (it doesn't matter which) by using number associated with it.
Pc will restart and load safe mode
right click start button'
type regedit and press enter
navigate to whereever the value is and change it back to 2
this won't fix GPU if its broken but might let him into windows.