Windows 10: Frequent Crashes out of nowhere

Hi there, I'm looking for some help with an issue.Recently my fiance and I went on holidays for 2 weeks. When we returned, our Windows 10 PC wouldn't connect to the Internet at all, and the networks wouldn't even show up. When I tried to turn off the computer, the screen would go dark, but the computer would still be on until I physically turned it off. Reinstalling Windows briefly helped, but yesterday it crashed and happened again. Unplugging and replugging our network adapter also briefly restores the internet, but the computer is still frequently crashing.I ran a scan now Windows command,

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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?

 

Frequent BSOD issue Asus K53sm NVIDIA 630m Windows 10

I would guess that your GPU is faulty, the crashes that are most frequent seem related to the GPU.

I do have a suggestion, although this suggestion is more often seen with 0x9F crashes where drivers are in an inconsistent state for the OS.
Try to change the powerplan, standard there are following plans

1. Powersaver,
2. Balanced, standard selected,
3. High performance

If you didn't change your power plan, you have balanced selected.
Select High performance and see if it makes a difference.

 

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.