GPU fans won't start.

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hendrix-

hendrix-

Honorable
Jan 16, 2014
5
0
10,510
Can't seem to get my GPU fans to start. Oddly enough I can get them to work in afterburner by setting the fan speeds to 100% in manual mode, no other percentage will get them to turn on. I can however (after forcing the fans to 100%) switch back to auto mode where now only one fan will run. Only for a short period of time though and to whatever AB suggest they should run at. Another bit I'm confused about, both fans should be running, regardless of fan speed/settings right? I should also mention when I first boot up the fans hesitate slightly as if they want to start but just don't. This all started after I cleaned my computer. Not sure what's going on here, but I'd like to get this sorted without going the RMA route. Any and all help would be greatly appreciated!

Specs:
CPU: AMD 955 BE @ 3.6ghz
GPU: Sapphire HD 7870
Mobo: ASRock 970 Extreme3
Memory: PNY XLR8 16GB (4x4GB)
PSU: Zephyr MX 750
HDD: WD Caviar Blue 320GB
SSD: Kingston SSDNow 120GB
 
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hendrix-

hendrix-

Honorable
Jan 16, 2014
5
0
10,510


My GPU is indeed putting out video with no fans turning. I've removed my GPU, reseated it and I've also tried my other PCI-E slot, neither made a difference. Power connections are good even the connections to the fan on the GPU. As for cleaning, pretty much it was a complete tear down, air dusted most of what I could and besides that I used a little isopropyl alcohol on the PCB of the GPU and a little bit for the motherboard.

Do you think my problem could be my BIOS update I did not to long ago? I've read on another forum about a user with the same issue, everyone suggested it was the BIOS update he did and that he should re-install windows. He never did come back with the results but it seems like something, sort of. I did my BIOS update about a month ago, upgraded to Win 8.1 and today was the first time that graphics card has been moved from that PCI-E slot since the update. You think a re-install could solve this?
 
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hendrix-

hendrix-

Honorable
Jan 16, 2014
5
0
10,510


I updated the BIOS on the motherboard, I did not alter/change the GPU BIOS in any way. Other then testing the GPU in a different machine, anything else I could check for?

 
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hendrix-

hendrix-

Honorable
Jan 16, 2014
5
0
10,510

No way of testing, my only other desktop machine has a PCI x8 slot. As of now I've re-installed windows, updated to the most current motherboard BIOS and I also re-flashed the same BIOS my GPU had prior and still nothing. I only found two other BIOS for my GPU but they are far to old, even worth a try?
Besides this I now can get 1 fan to stay on consistently by forcing it through CCC. The other fan only comes on when its set 82% or higher, still not even sure if both fans should be working all the time. So now that the fan is forced through CCC, sometimes when I boot up 1 fan will spin on start up, not all the time though. So at this point I'm afraid if I RMA the problem will still persist, seems the GPU and fans are fine, just something is preventing them from working without using software. I wish I had another machine to test the card, so I can be more definitive about what to do. As of now, still plays games great.
 
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Ironsounds

Ironsounds

Champion
Jul 31, 2011
10,403
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Hello... You can put the card in the X8 slot... give it a try, this will determine if the problem is the card for sure... Then a RMA can be started.
I Don't know whether both should be running or not... Try another Post with your Brand Model " Should both fans be Turning?"
 
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