Question while playing games in high graphics my pc crashes?

Mar 27, 2022
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recently i upgraded from an i5-9400f to an i7-11700F and when playing a game (lets use fortnite) at high graphics, my pc will just simply shut off, then reboot like ive just turned it on. i was wondering, (stupid question incoming) if my 550w power supply is the problem?


(specs)
GPU: GALAX GeForce GTX 1660
CPU: Intel i7-11700F
RAM: 16GB DDR4 2666 MHZ
PSU: 550W (unsure other details, no sticker)
if it matters
SSD: 256GB
HDD: 1TB
 

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