Windows 10: My windows crashes on startups.

My laptop crashes on startup and sometimes even randomly while I am using it This happens on any random startup like sometimes it happens and sometime don't. I had this issue before where it got fixed by changing the port of ssd to another and reinstalling windows but this issue has popped up again. One thing I have noticed that both of the time this issue popped up when I installed a pirated version of Witcher 3: wild hunt The website seems safe as I have downloaded multiple games from it but nothing of such sort happened from any game and played it for some time. Last time I was unable

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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!

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?

 

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.