hello and happy new year to everybody , as the title says the pc is restarting while gaming and cant seem to find the issue at least not on on poc settings , changed for it to show BDOS still nothing, changes the power management and nothing ,stressed the cpu with cpuz and nothing seems to happen , the pc is not having overheating issues either

Specs are:

5600(undervolted)

evga 3080 xc3 ultra

asus tuf b550 f wifi 2

rm850x psu from corsair

samsung 980 evo

32gb corsair vengeance ram 3200mhz cl16

tried updating drivers still does the restart, my to do list at this point is opening the pc and checking for connections ,changing psu but money is an issue at the moment so its not something immediate