Question Crashes happen everytime I open applications or try to install apps

Oct 20, 2022
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I was gaming with my friends and this suddenly happened, game crashed and i couldnt open it again.
Rightnow I can only open my firefox browser, and my steam which auto-starts, but i every game crashes when i open them. I first checked cpu and gave a brief cleaning, then i found out it is not cpu. I told my friend and was told it could be a BUG in system, I was told to fix using Powershell, I googled and used the code
"Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest. "} "
but this didnt work
 
Oct 20, 2022
6
0
10
full system spec? include brand and model of the psu
how full is the ssd?
My specs:
CPU: Intel(R) Core(TM) i5-10600KF CPU @ 4.10GHz 4.10 GHz
Mobo: Gigabyte Z490 AORUS ELITE AC
GPU: Gigabyte GeForce RTX 3060 Gaming OC 2.0 LHR 12GB
RAM:16GB
PSU: EVGA SuperNOVA 750W G5 80+
HDD: Seagate BarraCuda 2TB 3.5" Internal HDD SATA3 ( it currently has 118G available out of 2TB, could it be this reason)


i was using 2070s before, i changed to this GPU afew days ago. I was switching between my game screen and desktop then my game and other apps shut down