Windows 10: A few minutes after startup the resolution goes to lowest setting why is happening

Hello I have Windows 11 24H2, OS Build 26100.2894 & Windows Feature Experience Pack 1000.26100.36.0 this has been going on for months and started like 1 month after I got 24H2. whats going on is my HP laptop starts up with the highest resolution settings then like 2 to 3 minutes later it goes to the lowest Resolution and I go into settings and use display and try to reset to the highest but it won't change and stays at the lowest setting. So I unplug my HDMI wire and PC just changes to the highest resolution then I plug HDMI back in and it stays normal.So I said I will start PC with HDMI u

:)

 

Screen resolution resets to lowest setting on reboot

I have 3 Dell U2412M monitors running off an AMD Radeon 7870 card that drives two of the monitors from DisplayPort connectors, and the third through HDMI.

I have a problem where, sometimes on reboot, the primary display will change resolution to the lowest setting. Once I login the computer indicates that it does not recognize the primary display, and I cannot change the resolution. Attempts to reset the
driver fail. Unplugging and plugging back in the DisplayPort cable from the back of the monitor fixes the issue. This works whether done before login or afterwards.

I've swapped the monitors and the cables around and the problem follows the primary display. The trick for unplugging the DP cord only works if I unplug from the monitor end of the cord. As I write this I realize I haven't attempted to set the HDMI as
the primary, so I'm testing that now.

All this leads me to believe there is something happening programmatically.

Thank in advance!

 

Can't get GPU-Z to start with Windows 8.1 startup

I'm not sure how to do that. Could you list the steps for a noob?

 

Brightness is stuck on lowest setting

Hi Rhaine,

This looks like an automated response. I tried everything you suggested, but when I re-enabled the drivers, the brightness was stuck in the lowest setting. Now i cant even see enough to access the areas you suggested. Thank you, though!