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118
January 12th, 2026 08:28
Screen changes resolution to 640x480 randomly
I have different Optiplex Micro Desktops (3080, 5060, 7070) all installed with Windows 11 and sometimes the resolution of the screen changes to 640x480. In the settings i cannot change it back to the regular 1920x1080, the only option i see is the 640x480. All desktops are connected with displayport cables to their monitors. Only unplugging the cables solves the issue, but it's not a long term solution obviously.
I have checked the graphics, monitor and BIOS drivers on the desktops and they are all up to date. I also tried reverting back to older drivers, but the issue still stands. The issue started like a month ago and every week it keeps happening to more desktops.
Has anyone came accross this problem? Thanks!
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redxps630
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15.5K Posts
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January 13th, 2026 10:12
usually indicates the graphics card isn't reading the monitor's Extended Display Identification Data (EDID) correctly, causing it to fall back to a default, low resolution.
PPinformatika
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January 13th, 2026 14:09
@redxps630 could this EDID error be solved by using a Custom Resolution Utility (CRU) program to overwrite the EDID coming from the monitor?
Alvy_das
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January 20th, 2026 00:50
simple reinstallation should resolve such issue, never need be using "third" (4'th IRL) party software for such basic functions... unless, you are using separate GPU card... but that's a "different story"