Dead Motherboard?

[ShiBDiB]

So got a new GPU today and think I managed to fry my motherboard during the install somehow. After installing the new GPU the computer would not start at all, no fans no lights no beeps.

I've removed the Mobo and am troubleshooting outside of the case now. All peripherals and GPU has been disconnected.

Things I've done.

- Cleared cmos
- Reseated CPU
- Removed all RAM and also tried one stick
- Tested the PSU using the paperclip trick (fan spins)
- Tried an old PSU

I figure even if the CPU went bad I would still get at least the PSU fan to spin. I do not have another CPU I could test with.

So unless anyone has any other ideas it sounds like my Mobo has kicked the bucket and I'm just looking for confirmation on that before I look for a replacement.

 

[Mussels]

Is this the ryzen in your specs?

It wont boot without a GPU of some kind, but if you're seeing issues with zero power at all then the issue is the PSU, power connectors, or CPU

 

[ShiBDiB]

Is this the ryzen in your specs?

It wont boot without a GPU of some kind, but if you're seeing issues with zero power at all then the issue is the PSU, power connectors, or CPU

I figured it won't boot, but I expect it to at least get the PSU fan spinning without a GPU. I'll try the old one in a bit, needed to take a step back from it before I threw it out the window

 

[Mussels]

Mobo manual is super helpful, you have debug LED's on there... somewhere

They may be just above the RAM slots, but the stock images they have are terrible

 

[ShiBDiB]

Mobo manual is super helpful, you have debug LED's on there... somewhere

View attachment 232070


They may be just above the RAM slots, but the stock images they have are terrible

Nope not getting to that step. Nothing powers up at all

 

[Mussels]

Time to send us nudie pics then
Of the PC

obviously check the PSU is connected to the wall, the switch is on, 24+8 is connected...

 

[lsevald]

It's easy to check the PSU separately, short the green wired pin in the 24 pin ATX connector to a black wired ground pin (paper clip does wonders), and see if it powers up with everything else disconnected from it. If you have a DC multimeter, you can check the volts also

 

[Mussels]

Oh yeah thats an obvious one, are you actually turning the PC on... disconnected power button/using the wrong pins is a common goof

 

[ShiBDiB]

Time to send us nudie pics then
Of the PC

obviously check the PSU is connected to the wall, the switch is on, 24+8 is connected...

It's easy to check the PSU separately, short the green wired pin in the 24 pin ATX connector to a black wired ground pin (paper clip does wonders), and see if it powers up with everything else disconnected from it. If you have a DC multimeter, you can check the volts also

Did that with a paperclip and the fans spin up fine

Oh yeah thats an obvious one, are you actually turning the PC on... disconnected power button/using the wrong pins is a common goof

I've used 2 different screw drivers... Just incase haha. And I tried both the power switch and reset button when the board was still in the case.

I think I did a decent job troubleshooting out the other parts. The no fans spinning at all thing just yells Mobo to me at this point.

 

[Mussels]

Show us the whole board in one image, and double check the pins you're powering up from - and if theres a CMOS reset jumper (not just pins, but the actual jumper) make sure its on 1-2 and not 2-3

 

[ShiBDiB]

Show us the whole board in one image, and double check the pins you're powering up from - and if theres a CMOS reset jumper (not just pins, but the actual jumper) make sure its on 1-2 and not 2-3

I'm at work now so won't be able to troubleshoot further for another 12 hours or so. Plan is to quadruple check the correct power pins (which I'm 99.9% are right, and I've tried with the case button), try with the old GPU in (maybe it won't even try to post without something), reset CMOS again, cry a little maybe.

 

[Mussels]

All i can think of is old GPU, CMOS reset, and BIOS flashback (to latest BIOS)

 

[ShiBDiB]

Assuming it's a hardware failure, Mobo is best case scenario cost wise with the current market... So at least I have that going for me

 

[basco]

last thing i can think of = bent pins on cpu ?

 

[ShiBDiB]

last thing i can think of = bent pins on cpu ?

Didn't see anything when I reseated it, and it had been working fine 12 hours ago. Also think I'd still get a PSU fan spinning and maybe a mobo led error if the CPU was no good.

 

[Mussels]

Didn't see anything when I reseated it, and it had been working fine 12 hours ago. Also think I'd still get a PSU fan spinning and maybe a mobo led error if the CPU was no good.

Never assume things like that, always test and verify
CMOS reset and BIOS flashback dont require a CPU in the socket, so you can easily take it out, test those and then reinsert to test again (with another RAM stick, and other RAM slots too)

 

[micropage7]

i agree, just test without any components, likely it's from the board but you need to check it further to make sure

 

[Caring1]

Checking the PSU with a paperclip isn't definitive proof it's ok.
Try with another PSU if possible.

 

[lsevald]

If PSU powers up while disconnected, but not while connected , chances are the POWER_GOOD ATX signal isn't firing. Something might be shorted in a PCIE slot or CPU (bent pins, foreign conductive objects). Have you tried powering up the board separately (without CPU, GPU, SSD and RAM), just to see if power stays on? BIOS should start to go through POST (and hang on missing CPU obviously). Also I see something in the top PCIE slot (probably a hair strand), clean the board and inspect it thoroughly for anything out of place is where I would start

 

[Franz]

I figure even if the CPU went bad I would still get at least the PSU fan to spin. I do not have another CPU I could test with.

But you removed the cpu when a new vga was intalled?

Thats very strange, I think the first thing you had to try is roll back the old vga and see if the issue is gone.

 

[ShiBDiB]

Checking the PSU with a paperclip isn't definitive proof it's ok.
Try with another PSU if possible.

This is corsairs recommended way of testing. Also tried a new/old PSU anyway.

Never assume things like that, always test and verify
CMOS reset and BIOS flashback dont require a CPU in the socket, so you can easily take it out, test those and then reinsert to test again (with another RAM stick, and other RAM slots too)

I just tried the old GPU with no change.

I don't believe I can do anything bios related as there's no power at all.

Tried no mem/other sticks/other slots.

Tried no CPU (pins look fine on it).

I'm out of ideas short of ordering a new board.

 

[Just Some Noise]

Most motherboards start if there is no CPU in it. So if the board does not power up even without a CPU installed, it most likely has a short of some kind and stops the PSU from powering on.

 

[ShiBDiB]

Ordered a new board (ASUS AM4 TUF Gaming X570-Plus). Should be here next week.

Guess it's a laptop weekend for me.

 

[Deleted member 24505]

There is a hair? in the PCIe slot

 

[ShiBDiB]

There is a hair? in the PCIe slot

It was tested without the hair (an unavoidable joy of being a dog owner)