asus tuf b450 with 2400G.. was working fine, took it to my mates to update his bios so his 3600x would work, i managed to bend some pins on my cpu but got them all back perfect. my pc will no longer boot with the 2400g, so took it back to my mates and it works in his board!. i thought my MB must be broke, but then his 3600X works in my board? how do you detect a fault when both items work, just not together any more, both items still have warranty but which do i send back, any ideas on what to try