PC restarts randomly with no BSOD

[Windows 11]

My PC restarts randomly, with no BSOD or anything—just a black screen and a straight restart. This has been happening 3 times once every 4 days for about 2 weeks now, but it has happened 1 time before around August, which is when I upgrade my PC Hardware. It's been out of control recently, however. Today, my PC has been restarting 4-5 times in a row in 2-3 minute intervals. I reinstalled Windows 11 normally, and before I did that, I used DDU Uninstaller to wipe my graphics card and CPU. The frequency of the restarts has been reduced, but now it happens randomly.This mostly happens when I'm in

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