Question Windows 11 background black screen just started happing

CPU: Intel Core i9-12900K 3.2 GHz 16-Core Processor
CPU cooler: Thermalright Peerless Assassin 120
Motherboard: MSI MAG B660M MORTAR WIFI DDR4 Micro ATX ddr5
Ram: CORSAIR VENGEANCE RGB DDR5 80gb
SSD/HDD: WD black sn850x 2tb
GPU: Msi rtx 4070ti
PSU: Corsair RM750e (2023) 750 W 80+ Gold
Chassis: Fractal Design Pop Mini Air MicroATX Mid Tower Ca
OS: Windows 11
Monitor: Asus ROG PG278q 165hz, Asus VG278 144hz
 
Ripped off, we used to have to pay cash to play that game and you get it for free

Seriously though, it could be you need to update GPU drivers.

How old is mouse? Does it have its own hardware?