Windows 10: High end computer freezing/ crashing in an odd way, no useful information in system event...

A few months ago I put together a high end computer, and for the most part, it works fine. However, I have come across some unsettling freezing/ crashing with no error message or event in the event viewer, besides "System rebooted without cleanly shutting down" When this freeze happens, I can still click into tabs, but when I do the tab freezes and I cant interact with the application. Mouseover popups/ right click submenus also persist on the screen, slightly transparent. I usually have to force shut off my computer. My computer should not be overheating, and I have rand the memory checker, c

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Use of high end work station

How can multi user remotely access windows 10 education version, If not then please suggest the way for using high end work station by different users simultaneously. Or please suggest any way of using high capacity, high RAM and heavy processors to be
used in highly efficient way. I don't want my work station not to be used efficiently.

 

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.