Need help! Gpu stopped working!

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Fragmet

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Jan 9, 2017
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My gtx 1080 a8g stopped working in my second pci-e lane but works in the 1st and 3rd lane. it boots up, fan spins and stop. but nothing recognizes it nor does it put out video in the 2nd lane. please help!
 
Solution
panathas
It seems that you have a dead PCIe slot on your board. Since it's relatively new you should RMA it.

Why do you need the 2nd PCIe slot? You only have one GPU, so you should always be using the 1st slot because that's the one that uses all the 16x PCIe lanes. The 2nd slot is using only 8x lanes. You could also try updating the BIOS if you haven't done that already. Your CPU is fairly new and that board is old and it needs a BIOS update in order to properly support the kaby lake CPUs.

Also the bent pins have nothing to do with that. The CPU is connected only with the 1st PCIe 16x slot. The motherboard uses special switches that transfer 8 of those lanes to the 2nd slot. If one of those switches is bad/damaged or a bad capacitor could...
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panathas

panathas

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Feb 12, 2014
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Please post your complete system specs. That 2nd PCIe slot on your motherboard is probably bad or damaged. If it is hardware damage you should RMA your board if it's still under warranty. If not I'm afraid you need a new board or you could live with that board but you won't be able to use that PCIe slot. Now there is a small chance that this issue is BIOS related. If that's the case a CMOS reset should fix it. If that doesn't work then there is nothing else you can do.
 
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Fragmet

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Jan 9, 2017
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4,630


thank you panathans for the quick response! I checked for bent cpu pins and they're all ok. which means I also reseated and none of that fixed it I'll try to do a CMOS reset. and the mobo is a few months old so...

pc specs:

i7 7700k
ASrock z170m extereme4 BIOS 7.20
Asus GTX 1080 A8g
G.Skill Trident Z 3200mhz (2 x 8)
Corsair RM750i
full EK waterloop
 
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F

Fragmet

Reputable
Jan 9, 2017
72
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4,630


I tried the CMOS reset and it didn't work...
 
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panathas

panathas

Splendid
Feb 12, 2014
1,108
16
30,315
It seems that you have a dead PCIe slot on your board. Since it's relatively new you should RMA it.

Why do you need the 2nd PCIe slot? You only have one GPU, so you should always be using the 1st slot because that's the one that uses all the 16x PCIe lanes. The 2nd slot is using only 8x lanes. You could also try updating the BIOS if you haven't done that already. Your CPU is fairly new and that board is old and it needs a BIOS update in order to properly support the kaby lake CPUs.

Also the bent pins have nothing to do with that. The CPU is connected only with the 1st PCIe 16x slot. The motherboard uses special switches that transfer 8 of those lanes to the 2nd slot. If one of those switches is bad/damaged or a bad capacitor could cause this issue. Finally you should also know that if your GPU is too heavy it may have bent and damaged the PCIe slot.
 
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