Recently, I encountered a persistent and maddening issue with my Windows 11 system that I haven’t seen covered in much technical detail elsewhere. For the past two weeks, my desktop (custom build, Ryzen 7 3700X, 32GB RAM, Samsung 970 EVO SSD) began freezing randomly - but with a twist: all windows and programs would “visually” freeze, but keyboard shortcuts (such as Win+L or Ctrl+Alt+Del) still responded. Sound would continue. Additionally, peripherals remained powered, and if music was streaming, it played uninterrupted. The freeze would last 15–20 seconds, after which the desktop would unfreeze and everything operated normally - until the next occurrence.

Initial Troubleshooting Attempts:

My first instinct was to check Event Viewer. Strangely, nothing obvious appeared at the timestamps of the freezes-no critical errors, warnings, or hardware- or driver-related messages. Online searches suggested everything from hardware faults, RAM instability, storage issues, to GPU driver bugs.

I methodically worked through the following:

Updated all drivers and BIOS/UEFI to the latest versions, including chipset and graphics.
Disabled all third-party startup programs and services using msconfig, ruling out software conflicts.
Ran sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth. No corruptions found.
Checked SSD health using Samsung Magician; no issues reported.
MemTest86 overnight – zero errors.
Reinstalled Windows 11 (fresh install, not an upgrade). The problem re-emerged within hours on a clean system.

What Finally Solved It:

Unusually, the solution was tied to the new “HDR” features in Windows 11. I had recently started using Auto HDR (Settings > System > Display > HDR settings, turning on both auto HDR and setting default apps to use HDR).

On a hunch (prompted by a Reddit thread describing “HDR stutter” mainly for gamers), I applied the following change:

Disabled Auto HDR and switched the Color Profile back from a custom ICC profile to the Windows default (sRGB IEC61966-2.1).

After making this adjustment, the problem completely disappeared. No more desktop freezes, even after several days.

Further Notes and Insights:

Through further testing, I discovered the issue only manifested when both Auto HDR was enabled and a non-standard color profile was selected. It appears that Windows 11’s HDR rendering pipeline can conflict with certain ICC profiles (especially those installed from monitor calibration software), causing periodic stalling in the graphics stack.

For others facing intermittent desktop/UI freezes on Windows 10/11, particularly with HDR-capable monitors or custom color profiles, my recommendations:

Disable Auto HDR and revert to the system’s default color profile.
If the freezes vanish, re-introduce these features one at a time to narrow down the cause.
If an ICC profile is strictly necessary (for color-critical work), consider using SDR mode only.

I’d be interested if others have experienced similar symptoms with HDR and custom color profiles; it appears this combination is under-reported in Windows forums. Hopefully this spares someone else hours of frustration.