Question PC crashes randomly can't turn it on until starts up again by itself

Aug 10, 2020
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so my girlfriend bought her parts around a month - 2 months ago, it was working fine until she left for a vacation for around a week when she came back she bought a new keyboard her PC ever since plugging it in for the first time her PC has been crashing randomly maybe 4 times before it works for a few hours then starts crashing again, we've already tried resetting CMOS and using a different keyboard but it doesn't help at all, wasn't exactly sure what part of the threads forum to put this in because we're not sure what the issue is but any help would be greatly appreciated as her courses are online and she needs her PC to complete them.

GTX 1660 super
AMD ryzen 5 3600
Gigabyte B450 Gaming X
G.Skill Trident Z RGB 16 GB
EVGA 500W BQ
Intel 660p 512 GB SSD
FSP CMT340 case
 

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