Windows 10: Games keep crashing, even after a fresh installation of windows.

Every time I play a game it crashes to desktop within 20 mns. I've reinstalled windows twice now, replaced ram, upgraded drivers, took it to a local micro center to run diagnostics and they said all my hardware is working fine. Micro center suggested it was a software issue and I needed to reinstall windows. I'm really at a loss for what to do next. I'm running on windows 10, with a gtx 2070, ryzen 7 1700x, 16gb RAM, MSI B350M Bazooka motherboard. I've looked through event viewer and the only error i've seen come up is a Kernal Power error, but i've only seen that once. When games crash it occ

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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?

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

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.