Question PC turns off while setting up Windows after a few seconds and automatically restarts.

Jan 10, 2020
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I've been building my friends computer for about 2 hours and when I did first boot it turned on perfectly. The BIOS works well, it doesnt shut off while on it but once I try to boot off a clean USB, it loads up the Windows 10 setup and after a few seconds the PC restarts on it's own, which doesnt allow me to set up Windows.
 

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