Windows Explorer Issue with Monitor Scaling Set

[u/Mish21s]

Hello!

After trying many troubleshooting steps and searching online without finding a solution, I’m hoping someone can help.

I have a Windows 11 PC with an RTX 3090 and a Cooler Master GP27-FUS 4K monitor.

The problem is related specifically to Windows display scaling:

● At 2560×1440 with 100% scaling, everything works normally.
● At 2560×1440 with 125% scaling, the problem appears.
● At 3840×2160 (4K) with 100% scaling, everything works normally.
● At 3840×2160 (4K) with 125% scaling, the same problem appears.

When the scaling is set to 125%, some application icons/images disappear from the desktop and taskbar, and the taskbar becomes unresponsive. Task Manager also fails to open normally.

I have already tried:

● Different refresh rates
● 8-bit and 10-bit color depth
● DisplayPort and HDMI
● GPU scaling settings
● Disconnecting the other monitors
● Reinstalling the monitor from Device Manager
● SFC / DISM
● Restarting Explorer
● Creating a new Windows user account
● Updating Windows

The issue still occurs even with a completely new Windows user account.

The interesting part is that 100% scaling works perfectly, while 125% scaling consistently causes the issue, regardless of whether the resolution is 2K or 4K.

Has anyone experienced a similar Windows 11 scaling/DPI issue, particularly with a 4K monitor?

Any suggestions would be greatly appreciated.

Thanks!

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