Sli Problems

[Qvilulz]

im on a 3960x and a rog extreme 4 mobo

sli 680 and 16gb of ram

 

system worked fine for past month but suddenly crashes when i try to boot games like l4d2 and guild wars 2. for guild wars 2 the game crashes after roughly after 10minutes of play l4d2 crashes once i try to load up a game. the system is able to play other games however like heros of the storm and metro last light just fine for hours.

 

i cannot for the life of me figure this out. if any one needs more info or has any suggestions that would be great.

 

on a side note i am unable to get the system to see both gpus now. i was able to see and use both before. however the system boots and is able to run all games when i use either of my 680s. so the problem only exsists when i try to sli

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Have you tried reinstalling your drivers?

[byalexandr]

What OS are you running?

[Ellis_D]

What's your PSU?

[Qvilulz]

yes drivers are all freshly installed, windows 10 pro, and 1000w coolermaster gold

 

just to be clear sli used to work but now even sli is broken

[Qvilulz]

update: 2nd gpu fan now runs at full speed and does not show up on computer. however fan only spins at max speed during bios boot screen and stops when windows loads. when i try to sli

[Qvilulz]

update. windows now no longer reconizes the 2nd gpu from the pcie lane but gpu still works on other computers.

[tbroadwater2010]

update. windows now no longer reconizes the 2nd gpu from the pcie lane but gpu still works on other computers.

BIOS update?

[Qvilulz]

yep im on the latest bios 4901. im starting to expect a dead pcie slot however the slot. on both my pcie x8 slot and pcie x16 lane. however i am unsure how likely it is for certain games to break pcie lanes. since this problem only occured when i tried to launch left for dead 2 or guild wars 2. before i tried to play these games my computer would work on sli ust fine in the current config. when the game launches my whole screen turns black and then the computer reboots with the 2nd gpu fan spinning at max.

[Kryptic BladeZz]

This happened to me when I received my 970's. What I did was swap the cards into different PCI slots and that didn't work so I moved the SLI bridge from the outer connector to the inner one and wallah that worked.

[Qvilulz]

ive tried that and the cards fan is still running max while its not being seen by the system. is there any way to check if i have a dead pcie lane? and once again how likely is it for a game to break a pcie lane

[0x1e]

yep im on the latest bios 4901. im starting to expect a dead pcie slot however the slot. on both my pcie x8 slot and pcie x16 lane. however i am unsure how likely it is for certain games to break pcie lanes. since this problem only occured when i tried to launch left for dead 2 or guild wars 2. before i tried to play these games my computer would work on sli ust fine in the current config. when the game launches my whole screen turns black and then the computer reboots with the 2nd gpu fan spinning at max.

I would point to Windows 10 being the problem.

[Qvilulz]

ok il try to run on a differant version of windows. however the gpu fan ramps before even the bios can boot up

[RossMadness]

I would do a clean install of your graphics drivers, but I assume you've already done that. Have you tried a different SLI Bridge? I had some weird issues with artifacting and games crashing and when I swapped the SLI bridge everything worked like normal.

[Dr_Nooberious]

To run SLI, the PCI-e lane speed cannot go lower than x8 or SLi will not work. Crossfire does not have this limitation.

 

Check your motherboard's spec to make sure it is compatible with SLI. 

 

Hope this helps.

[Qvilulz]

the main problem right now is that the pcie lane is now no longer recognizing the 2nd 680. ive tried on a brand new ssd with new drivers and everything

[Qvilulz]

ok i have tried with new windows and sli bridge and still the same problem. the gpu fan spins max before the bios can even load. could this be a dead pcie slot?