Question Strange screen glitch when logging in to windows

Deco22

Honorable
Aug 6, 2017
25
0
10,540
Hi Guys,

Over the last week I've been struggling with an issue where my screen will display random square static like boxes after logging in to windows. It only seems to happen once at log on and then won't happen again until rebooting the PC, I haven't noticed anything while gaming or watching youtube etc... This only ever happens on my main monitor

I caught a video of it on my phone camera, it's not the greatest quality but you can get the idea: https://drive.google.com/file/d/1ys8QrxUPiqVBkqbwnOKVvIcXfr5JK-tY/view?usp=drive_link

Specs:
12900ks
Maximus Z690 Hero
RTX 4090
Corsair HX1500i

Monitor is an MSI MPG321UR-QD

I've tried everything from DDUing drivers multiple times, using different port and cable combinations, rolling back drivers. So far nothing seems to have helped. Connecting my monitor via HDMI instead of DP does seem to make the issue go away however, but this isn't really a practical solution for me.

Any help is appreciated :)