Computer startup and powerdown immediately

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Ladies and Gentlemen,

I have a weird troubleshooting question to ask.

I just bought a new computer recently, and I notice that occasionally
evertime I start up the computer it immediately shutdown (power off). And I
can't power it on right after that. But if I wait for a while, I can power
back on again, and then it would say something about CPU settings is
incorrect blah blah.. The computer then start up Windows as if nothing has
happen. It will work again the next day and even weeks later, then it start
doing it again.

It happen 3 out of 20 boot up (startup), and it is getting really annoying.

Right now I think it's to do with the PSU, but could any other hardware
cause this random bootup problem?


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