I think I fried my motherboard [HELP]

Aug 26, 2018
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Hi, I have been using a Essentio CM6730 for the past 6 or so years and It has been running fairly well. A couple years back I upgraded the default card to a r9 380 and the power supply to a coolmax 1-500. Both changes were successful. Just today, I replaced the stock i5-3350p to a i7-2770k (both on the LGA 1155 socket). I applied thermal paste, slotted the cpu.... and nothing. All fans, lights and typical hard drive noises came up, but there was no signal on my monitor. I replaced my old cpu back into the slot and... nothing again, same symptoms, no signal. I know I have ample power and all the parts work. The only conclusion I could come to was that I somehow damaged the motherboard (although all the pins are clearly aren't bent??). I also tried a cmos reset and have the latest bios for my computer. Any ideas? Please don't link the troubleshooting part/breadboard thread I have seen it many times.

Side note: I have recently become aware that bad cpu's can fry motherboards?!? Could this be the case considering it didnt work with the old cpu? Is there any way to test this?
 

Phaaze88

Titan
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Bad cpus fry motherboards? It's the other way around, since the mobo supplies voltage to the cpu, and you can kill the cpu via overclocking - applying too much voltage, therein frying the cpu.
Bad cpus are ones with bent/broken pins - just won't work, they don't kill mobos. Or you can apply too much thermal paste, and it gets into the socket(doesn't kill either cpu or board)... OR something else is causing a short inside the case. Double check all connections - make sure everything's completely plugged in.

I suspect that the culprit is the low quality psu in your build. I'd replace that asap - if you know someone you can borrow a psu from to test with, just to rule this suspicion out.