So I have a 3080 i9 10900k 128 gb ram ddr4, an a 850w psu on a asus mobo. So I let my little brother play on my pc (never a good idea I know) and he said (after the fact) that he heard somewhere online that he can get better fps on fortnite if he overclocks the computer, so he downloads msi after burner and puts all the bars up, he said he didn’t do max but idk. So he runs the pc and now im freezing for a bit whenever i open an app and my wallpaper is all black. I tried rebooting and holding control but nothings working, please help me