Windows 10: Newly built computer crashes on almost all games

Hello, I built this computer a few month ago in the first windows installation everything was working fine but after around 2 month i was getting Kmode exception not handled while trying to run any games with riot. So I tried all the fixes I could find and I clean reinstalled windows by usb because when I would try to reset within settings it would give me system exception not handled. After this install of windows I also updated my bios and found all drivers that I could possibly update. At this stage apart from when I was installing the windows the installation process would restart without

:)

 

Newly Built Computer Randomely Crashing

Sorry, who told you computer troubleshooting made sense lol sometimes its just one of those things, but if you can swap the psu try it, also check your hdd's for errors, if they both some up clean then you can try some linX and memtest

 

Newly Built Computer Randomely Crashing

But then wouldn't it make sense when the computer was only crashing during performance intensive situations? Because I can play games, and it runs them great and won't crash for hours, but it crashes during odd times like extracting files, which makes me think the hard drive.

 

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?