Windows 10: Does anyone know what this might mean? I am trying to figure out where my computer is crashing

KERNEL_SECURITY_CHECK_FAILURE 139 A kernel component has corrupted a critical data structure. The corruption could potentially allow a malicious user to gain control of this machine. Arguments: Arg1: 0000000000000003, A LIST_ENTRY has been corrupted i.e. double remove. Arg2: ffffcf8882d9f730, Address of the trap frame for the exception that caused the BugCheck Arg3: ffffcf8882d9f688, Address of the exception record for the exception that caused the BugCheck Arg4: 0000000000000000, Reserved Debugging Details: ------------------ KEY_VALUES_STRING: 1 Key : Analysis.CPU.mSec Valu

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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?

 

GPU-Z 0.8.7 crash on launch

W1zzard is asking you to test so that he can suggest next steps and be able to troubleshoot the issue you have.
If another version works, it would be one set of steps.
If several other versions also fail/crash, then it would be another.

 

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.