CPU works with one motherboard, but not another

canoodlekewder

Reputable
Jul 26, 2014
3
0
4,510
Alright everyone, I need your help. About a year ago I switched from ATX (working perfectly) to ITX and used the same CPU. Today, I tried putting back in the same CPU in the old ATX motherboard and cannot get it to POST, with a dr debug just displaying 00. The motherboard is ASRock Z77 Extreme6 and the CPU is a 3570k. I put in an i3-2100 CPU in the motherboard and everything was fine, it started up. I thought I would update the BIOS because I was out of ideas, but that didn't work either. I put the 3570k CPU back into the ITX motherboard to make sure it was still working, and it was. I'm not sure where to go from here, any help is appreciated!