PC doesn't post and no signal to monitor

Vathios

Distinguished
Oct 4, 2011
2
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18,510
Hello, i've recently upgraded to a new pc and my brother has been using my old one.

But it randomly shut off on him one day and i found that the power supply was bad. I replaced the power supply and now the monitor won't show anything it simply says no signal. I've tried removing the RAM and i get no beeps. Same with the GPU, no beeps. All the fans spin, the motherboard lights come on indicating the CPU is in phase 4. I can also hear the HDD's running. I've also tried different monitors,cables, outlets and a different GPU.

So after searching tom's for awhile i've come to understand that its either a bad motherboard or a bad CPU. My question being is there anyway to know for sure which it is? It would be quite a pain to buy both to find it was only the MOBO that didn't work.

Specs:
MSI 770-G45
AMD Phenom II x4 810 2.6ghz
EVGA gtx 285
G.Skill 2x2G RAM
TT 600w PSU
2x WD 500g HDD


 


Thank you for replying,

but i've gone through that list already, and i did plug in the cpu power cable and the 24pin power cable, assuming those are what you are referring to.