Odd scenario leads to no POST/beeps/video. Is my mobo toast?

[Petars]

About a week ago my friend had an issue with his computer where he got no POST, beeps, or video. He decided it was the fault of his motherboard and basically scrapped his whole build in place of another. I've been in store for a cpu upgrade and figured I could buy his old one off him, an i5-3450...especially given that his old gpu and ram work fine, this lead me to believe the whole thing wasn't fried or anything. I also figured that if it didn't work, then no harm no foul and we trade back (little did I know). My computer's been working flawlessly for some 4-5 years now including earlier today, but for some inexplicably strange reason, after installing his processor my computer started having the exact same problem. I immediately reverted the change to no avail. Now, under essentially all hardware combinations (his processor / my processor, both sticks of ram / 1 stick of ram / no sticks of ram, dedicated gpu / no dedicated gpu) my computer refuses to pass POST, beep, or provide video output. I can see my fans spinning and that's about it. I've spent all night troubleshooting and looking things up about this problem. I know it isn't connection issues or similar possibilities because the computer was in perfect working condition prior to the swap. I'm posting this off of my phone and praying that you guys may have an idea that could help me. Thanks a million.

PC Specs:
CPU: i3-2100
Mobo: H61M-P21
RAM: 6gb (1x4gb, 1x2gb)
GPU: EVGA GTX 960 SC 2GB
PSU: XFX Pro 450w
HDD: WD Blue 500gb running Win7

 

[Burpo]

You put an IvyBridge cpu in a SandyBridge board.. You need to update the bios to the lastest version with your old cpu in, then install the newer CPU and it should work.

To get it back working with your old cpu, try this to clear cmos (reset bios)..
http://kb.stonegroup.co.uk/index.php?View=entry&EntryID=190

Also, make sure no pins in cpu socket are bent or out of line in any way. With all this cpu swapping, be careful..

 

[Petars]

You put an IvyBridge cpu in a SandyBridge board.. You need to update the bios to the lastest version with your old cpu in, then install the newer CPU and it should work.

To get it back working with your old cpu, try this to clear cmos (reset bios)..
http://kb.stonegroup.co.uk/index.php?View=entry&EntryID=190

Also, make sure no pins in cpu socket are bent or out of line in any way. With all this cpu swapping, be careful..

I've already tried that, as well as taking the battery out as per usual standards, on two separate occasions. From what I can tell the socket pins aren't bent.

 

[bradly1101]

Did he overclock? If so my guess is that something in the CPU got so fried that something internal shorted and is damaging other things. Just a guess.

 

[Kenmitch]

Not saying the following will work or won't cause any further damage to your motherboard, but it looks like you don't really have much more to loose anyways.

You did say it powers on but doesn't post. I'm assuming it at least stays on.

With the original cpu back in your motherboard try the following.

Power it up....Reset the CMOS while powered up with the jumper for a couple seconds! It should reboot and if your lucky it'll pop up with error message stating you need to enter cmos, etc.

Before anybody calls me crazy I resurrected two Gigabyte motherboards this way. No harm, possibly a foul as far as the MB's were concerned. Had a defective 4790k that for some reason corrupted the bios in both of them. Unconventional fix but it worked for me at least. Stumbled upon it in a Hackintosh thread I believe it was.