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Why square glitches appear on my screen?

post #1 of 3
Thread Starter 
What could cause these rapidly changing square glitch boxes that randomly appear on my screen? They seem to be stealing pixels from around my monitor.



Sometimes I also get the standard triangle glitches, where multiple triangles originating from a single object span all the way to infinity and they flicker furiously.

My GPU is AMD R9 270 from MSI. My motherboard is also from MSI.
I didn't have any graphics glitches with nVidia GTS 250 card I had before.

I have fully uninstalled and reinstalled AMD drivers too and it changed nothing. After upgrading to Windows 10, blue screen frequency when gaming has gone up from 1 per month to 1 per day. I am cooling both my CPU and GPU with closed water loop and AIDA64 shows max temp for GPU ~50 °C and for CPU ~60 °C. I have no separate GDDR5 cooler, but a 120 mm fan is blowing air directly towards GPU. I have 800 MHz overclock on my delidded Intel i5-3570K, reaching 4.2 GHz. I have noticed that the CPU and RAM clock speeds reported in AIDA64 sometimes peak for few seconds to 344 THz and 65 THz.
Edited by Tapsa - 9/29/15 at 1:37am
post #2 of 3
I had simillar issue with my Gigabyte R9 280X. I've researched this issue and I found out it is related to vram overheating or faulty vram.
Try down-clocking your core-clock by 50Mhz and memory by 100Mhz and see if this issue still happens.

I ended up flashing my card's bios to lower clock, since it was voltage locked, atleast the issue is gone and I get no more glitches for a year now thumb.gif
Edited by InStars - 9/29/15 at 5:58am
post #3 of 3
Thread Starter 
Thanks for the tip. How much you lowered your voltage with BIOS flash?
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