Windows 10: Some games keep suddenly crashing on startup?

Close to a week ago a few of our games, be they from steam or epic games etc, suddenly would crash upon starting them. We have tried all we know, reinstalled windows 10, uninstalled and reinstalled the games/programs used for said games, we have tried to use the compatibility troubleshooter and running as admin....nothing seems to work. We have no clue what happened to cause this, or even what to do to fix it. There are seemingly no problems with the drivers, we ran scans on everything we could think of.

Everything is updated, including drivers, games and windows 10. I checked for wires that had been undone but none were to be had, all were in place....We really have no idea what else to do and would greatly appreciate the help. If I miss any details, please by all means let me know. Thank you for your time.

:)

 

all games crash!

I suggest you run rthdribl > http://www.daionet.gr.jp/~masa/archives/rthdribl_1_2.zip
Increase the window size step by step and watch your vga temps permanently.
What happens?
If it crashes, run at stock speeds as suggested before and retry.

P.S.: When your system locks, does the display signal turn off after a time?
Stuttering sound or no sound at all when freezing?
What X1800XT model do you own exactly?

 

Can't get GPU-Z to start with Windows 8.1 startup

I'm not sure how to do that. Could you list the steps for a noob?

 

all games crash!

ive watch my temps and both the cpu and gpu are within normal ranges. when it freezes it simply freezes the image and stops the sound. i must reboot to get back to windows.