My motherboard has died?

[krullex151]

UPDATE: MY COMPUTER WORKS! I have absolutely no idea why but I decided to try a different CPU and ram, it powered on fine so I tried my ram, worked fine so I put my CPU in... It's working perfectly fine... I literally have no idea how, I have done EVERYTHING possible apart from try a different CPU and ram in my board but why would doing that fix it????? Why does it now suddenly work? I'm the most confused person in the world right now, I've been building computers for over 10 years and I know almost everything about the internals of a computer and I've never seen something like this... I'm putting down to magic... And leaving it at that!

The PC will only receive power for a second and then turn off, it will then turn it's self on immediately after turning off and just get stuck in a loop of power for a second, then off then on then off.

I have done the most thorough troubleshooting possible and have finished on realising it's the motherboard because I've used a friend's motherboard, same CPU, ram, PSU, everything, just the motherboard is different, used the same battery too, it boots perfectly fine, now my question is... Can I salvage/fix this motherboard somehow? It's an older LGA 1155 board and they're a bit expensive/hard to find because they're old.

The motherboard receives power but only for a second before turning off (I have indeed baseboarded the build, it is not a shortage or power problem, when I say I thoroughly troubleshooted, I've literally done everything thinkable) all the lights on the motherboard function, CPU fan receives power, GPU receives power, even the BIOS Flashback feature works as I've reset the BIOS back to it's original bios and tried 4 different versions including the most recent, it's an ASUS P8Z77-V, the motherboard looks perfectly fine and was working perfectly fine but I decided to put an old HD 7870 in to just test it and see if I could possibly sell it, it booted fine, I downloaded the driver, then realised I want to be in safe mode to uninstall the Nvidia driver with DDU, reboot and the motherboard hasn't worked since

Any extra steps I can take? I'm going to put a different CPU in the dead (dying?) motherboard and ram even though I'm 100% sure it's the motherboard, I just find it hard to believe that swapping the GPUs has caused the motherboard to die...

 

[RyanTodd1]

You may have induced some static on to the board?

Aside from that i have no idea, seems like it may be either the PSU or the Board nothing else would cause it not function correctly, does it make kind of tik noise when it powers off and on again?

UPDATE: Check the memory modules, are the in good condition have potentially destroyed them? Without Memory the pc cannot power up. Maybe the actual modules arent damaged as they worked on another MoBo but maybe the actual slots are on the motherboard.

 

[krullex151]

You may have induced some static on to the board?

Aside from that i have no idea, seems like it may be either the PSU or the Board nothing else would cause it not function correctly, does it make kind of tik noise when it powers off and on again?

UPDATE: Check the memory modules, are the in good condition have potentially destroyed them? Without Memory the pc cannot power up. Maybe the actual modules arent damaged as they worked on another MoBo but maybe the actual slots are on the motherboard.

It's not the PSU, I've used 2 PSUs and my one works in my friends system perfectly fine, I honestly doubt static would kill an entire motherboard, maybe in the 90s but most motherboards made in the last 10 years have very good static protection, you can even find videos of people purposely staticly shocking their computers and nothing happens.

It makes no noise apart from the fans spinning up for a sec, the PSU turns off and back on it's not the PSU is on but the board turns on and off, the PSU actually turns off but I've tested the PSU and it's fine, it's literally working right now with no problems in games or during intensive tasks.

I'm so confused because the PC booted up fine when I put the HD 7870 in and then just suddenly stopped working after trying to reboot so I could put it in safe mode, it's also not the storage devices as it won't even turn on long enough with them out of the system, I've even tried booting with no ram but it won't receive enough power to even make a noise out the motherboard speaker

 

[krullex151]

I don't see how it can be the DIMM slots when I haven't touched them and they've been working perfectly fine, how could all 4 DIMM slots randomly die? Nope not going to believe that for a second lol