OS Won't Boot after activating SLI

Hamster1010

Reputable
Jan 19, 2015
19
0
4,510
Whenever I turn on SLI then turn my computer off and back on, it fails to boot, it loads the BIOS and gets to the Windows loading screen but then after loading for about 2 minutes the screen either goes black or says there is no input.

I have two EVGA GTX 960 SSC 4GB cards and both work fine, the SLI doesnt seem to fail after activation and use, only when restarting the computer. I have tested both independantly and I have checked and double-checked the SLI bridge connection as well as the power consumption so I do not think it is a hardware issue related to these things.

I know that drivers with SLI can be finicky and Windows 10 doesn't play nice. My short term solution to the problem is using the reset function, wiping my C: drive and re-installing Windows. Since that seems to help I postulate that the issue is a software issue, though I am not sure what.

My Specs:
OS: Windows 10 Home
Motherboard: MSI 970 Gaming
GPU(s): EVGA SSC GTX 960 4GB x2
CPU: AMD FX 8350
DRAM: Crucial Ballistix 2x4GB
PSU: Thermaltake 750W ToughPower Pro Gold

None of this is OC'd and it has standard fan cooling, though OpenHardwareMonitor shows no heat issues when I am going full throttle so I dont think it could be that.

I swear if it isn't one issue it is another. Hopefully this will be a simple enough fix, and any help is greatly appreciated.

IMPORTANT UPDATE: So my friend said updating the drivers may be of help, so I updated my graphics drivers, turned on SLI, and shut off my computer for the night. Today I turned it on, and it made it to the desktop for maybe 45 seconds and then my TV said No Signal and my PC's power tripped
 
Solution
It's not your power supply. I had the exact same problem with the exact same video cards. When I enabled SLI, everything (including games) worked great until I shut down or rebooted the computer. Then, Windows wouldn’t load. I had to go into safe mode and un-install the driver before Windows would boot again. I tried every recent driver revision, but no dice.

Finally, out of ideas, I swapped the cards with each other. It worked!! I don’t know why since the cards are supposed to be identical, but I did notice that one card has a slightly newer bios revision.

My Specs:
OS: Windows 7 Pro 64-bit
Motherboard: Gigabyte Z97
GPU(s): EVGA SSC GTX 960 4GB x2
CPU: Intel i5-4690k
DRAM: 3x4GB (12GB total)
PSU: Antec Earthwatts 500W

Hamster1010

Reputable
Jan 19, 2015
19
0
4,510
When I activate SLI, it doesn't shut off my PC, the screen flickers and I can continue on my way, with the problems I have been having, I usually turn SLI on when I boot the PC and turn it off when I'm done for the day. I've had others suggest that it's the power supply but I'm desperate to find something else because it's less than a year old and is more than enough power, like I said the problem only arises when I turn on my PC with SLI being active when I last turned it off
 

turbodieselvw

Reputable
Nov 6, 2015
1
0
4,520
It's not your power supply. I had the exact same problem with the exact same video cards. When I enabled SLI, everything (including games) worked great until I shut down or rebooted the computer. Then, Windows wouldn’t load. I had to go into safe mode and un-install the driver before Windows would boot again. I tried every recent driver revision, but no dice.

Finally, out of ideas, I swapped the cards with each other. It worked!! I don’t know why since the cards are supposed to be identical, but I did notice that one card has a slightly newer bios revision.

My Specs:
OS: Windows 7 Pro 64-bit
Motherboard: Gigabyte Z97
GPU(s): EVGA SSC GTX 960 4GB x2
CPU: Intel i5-4690k
DRAM: 3x4GB (12GB total)
PSU: Antec Earthwatts 500W
 
Solution