I built the computer using the MSI PRO Z790-P WIFI DDR4 motherboard. When none of the suggestions in this thread worked I started poking around in the BIOS as I had seen some advanced power management options while setting up the computer.
Go to (or try to find an equivalent):
Settings->Advanced->Wake Up Event Setup->Wake Up Event By: set this option to 'BIOS' (I tried using the 'OS' option, but it didn't seem to work)
Settings->Advanced->Wake Up Event Setup->Resume By USB Device: set this option to 'Enabled' (This will automatically enable the Settings->Advanced->Power Management Setup->USB Standby Power At S4/S5)
THIS!
My MOBO is also MSI but another model, yet this fixed the issue!
That BIOS section also had options to enable or disable Mouse and Keyboard waking up the system.
Definitely something MSI should look into and have these options set properly by default.
I had the same problem with the same model motherboard - the MSI PRO Z790-P WIFI. Changing these wake up settings in the BIOS fixed the problem. Specifically, I enabled:
- Resume by USB device
- Resume from S3/S4/S5 by PS/2 mouse
- Resume from S3/S4/S5 by PS/2 keyboard
These were in Settings > Advanced > Wake Up Event Setup. Your BIOS might be different.
None of the other answers or responses here resolved my issue. You may not even need to have an MSI board, but do check the BIOS on your board before mucking around with registry keys, the non-existent Win 11 (Home ed) power troubleshooter, or Device Manager settings.
Thanks for posting about this issue! Problem solved!