CPU or Motherboard gone bad

Rookie2304

Commendable
Jul 27, 2016
1
0
1,510
Hello, i have some trouble detecting which one is bad(pc is not mine)
this are the specs:
bitfenix case (not sure which one is it)
Asus M5A97 R2.0 Socket AM3+
AMD FX 8350 with antec h2o kuhler
GTX 560
4gbx2 ram corsair 1.5v
650w antec earthwatts (which i will talk about later)

The computer turns on, fans are also on as is the gpu but there is no signal on monitor,i've tested the ram and gpu on my rig and it boots on windows so i think those are not the problem, i also tried reseatting everything(cables,gpu,cpu,ram)reapplied the thermal paste,tried one dram at a time.
Last time this pc was running 2k15 it was choppy and then it went off leading to this situation.
green light turns on from first image
then i saw the psu has been manipulated,could this be the main reason why it's not working?

https://postimg.org/image/9hh0rhvpd
https://postimg.org/image/orgvyor7l
[img]https://postimg.org/image/5aw6c5w3l

what are the odds that the mainboard and/or the cpu are dead?
Thanks in advance