How to tell if CPU is defective.
Trying to upgrade cpu from Ryzen 5 1500x to Ryzen 5 5500 I got new from Amazon and gpu from rx 590 to rx 5700xt. However, the pc is failing to boot properly and consistently. I have been able to get into the bios every couple of boot attempts, but that’s rare and if I try to restart or sometimes even just stay in the bios too long, it will fail again.
As far as I can tell, there are no bent pins on the cpu and it is new. When I would switch it back to the previous cpu, it would work fine even with the new gpu. I also changed the ram several times and the problem stayed the same.
When attempting to boot, the DRAM and CPU lights on the motherboard would switch back and forth before ending on the DRAM light, after a few seconds the gpu would turn on and the VGA light would come on. After a few more seconds, the light would go from VGA->CPU->DRAM and stay there with the GPU turning back off and sometimes the CPU fan would turn off as well. This process would sometimes repeat once or twice before just remaining like that with the DRAM light on.
I have attempted replacing ram, changing cmos battery, resetting bios, resetting ram (boot without ram before replacing and trying again). I have reseated the cpu several times, checking the pins each time. I cleaned the CPU/mobo with alcohol. I checked all the cables.
Build includes:
Motherboard - Gigabyte AB350 gaming 3 bios ver f54
CPU - upgraded to Ryzen 5 5500 from 5 1500x
GPU - upgraded to RX 5700xt from RX 590
Ram - 16gb Corsair Vengeance/ 16gb G.skill ARES
PSU - APEVIA 600W ATX Prestige Power
Storage - 240gb SATA SSD OCZ ARC 100
Is there anything else I can do to troubleshoot or fix this? Is this CPU just defective? Thank you for your time and any advice is welcome.