Why does my PC show rainbow artifacts during BSODs caused by game anti-cheat?
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MellowPine47
My computer runs normally with no visible problems, but whenever a game's anti-cheat crashes badly enough to trigger a BSOD, the screen becomes covered in repeating rainbow-colored pixels. The crashes seem related to the anti-cheat software taking down Windows. Is this kind of graphical corruption more likely to be a GPU or driver issue, or can it simply be a visual effect of the system crashing?
Answers
Anti-cheat crashes can happen even when the game is being played normally, so the fact that anti-cheat is involved doesn’t imply anything suspicious. Updating or clean-reinstalling the game and anti-cheat components may help, but the dump file is the best way to separate an anti-cheat bug from an underlying driver or hardware problem.
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Collect the Windows minidump files from C:WindowsMinidump after the next crash. Those logs can help identify whether the anti-cheat driver, graphics driver, or another kernel component caused the BSOD. Make sure crash dumps are enabled, and compare several dumps rather than relying on one event.
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Check your graphics card model and driver version with DxDiag, then try a clean installation of a known-stable driver. Game-focused driver updates can sometimes introduce problems with particular anti-cheat systems, so a slightly older stable version may work better. It’s also worth testing whether the artifacts appear during other crashes or graphics-heavy workloads.
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Rainbow blocks during a crash don’t automatically mean the graphics card is damaged. Once Windows and the display driver stop responding, the last frame can become corrupted or repeated on screen. Still, check temperatures, reseat the GPU if possible, and run a graphics stress test to see whether artifacts occur outside the anti-cheat crash.
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MellowPine47: That makes sense. The system is stable everywhere else, so I’ll check the driver version and collect the dump files before assuming the GPU is failing.