fans run max speed

asrock b450m pro 4-f ryzen 5 3400G 2x4gb hyperx Fury gtx960 reddragon 500w psu my pc is 1 yr old, my issue has been happening for quite a while now, already changed my PSU with a generic one. but the PSU is not the issue because sometimes it runs but sometimes it won't, if it won't run and just...