Windows 10: Very frequent crashes

Ever since I upgraded my laptop from 16GB of memory to 32GB my computer has been crashing a lot more than usual BSODs, spontaneous reboots, and sometimes the screen goes black but the screen is still backlit. I've taken a few steps that fixed the problem a little 10-11 crashes a day is now down to 4-5. The crashes happen when I'm playing a game, when I'm browsing the web, and when I'm not using the computer at all. So, basically, anytime. Sometimes 6-8 hours go by before another crash happens. Other times it's only about 10 minutes. Also, the BSOD stop codes vary. I've run two different me

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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.