PC doesn't post, no post codes, but CPU fan spins up. Dead CPU and/or mobo?

MaxG123

Honorable
Mar 10, 2017
21
0
10,520
I have an old-ish MSI A55M-P33 and A4-3400 laying around so I decided to see if it works, bench it, then sell it. But when I tested it, it didn't post, but the CPU fan was spinning. Nothing came up on the monitor, and there were no post codes. I tested it on an FSP 500W (tested, fully working), with a single 8GB stick of DDR3 1600MHz ram(from my personal system), with and without the ram. At this point, I'm pretty sure the mobo is dead, but still wanted to check.
 

MaxG123

Honorable
Mar 10, 2017
21
0
10,520
Fully compatible, they were both from my old system. When I decided to upgrade, I just put them in a motherboard box where they were for the past 2 and a half years.