MSI HD7850 Fans start spinning, then stop

havoc4112000

New member
PRIVATE FIRST CLASS
Joined
Jan 22, 2015
Messages
9
I'm not sure when this problem started because it was in my dad's pc and I was installing a drive when I noticed the graphics card's fans werent spinning. When I turn on the PC the fans move for maybe one second and then they stop and nothing I can do will make them spin again until I restart the PC when they will again start/stop. I tried moving the graphics card to a different PC but the same issue happens. Any idea where to start troubleshooting?
 

flobelix

Well-known member
Global Moderator
Joined
Jan 25, 2007
Messages
39,448
That sounds just like bad fans. Have you tried controling them with Afterburner? Which exact 7850 model is it?
 

havoc4112000

New member
PRIVATE FIRST CLASS
Joined
Jan 22, 2015
Messages
9
flobelix date=1587495777 said:
That sounds just like bad fans. Have you tried controling them with Afterburner? Which exact 7850 model is it?
I've tried Afterburner but I cant make the fans spin with that either.

Do fans die in pairs? I thought if it was a bad fan, one would die before the other. I wonder if I have a fan with a 4 pin connection that would fit. That way I could do some troubleshooting.

Its the R7850 Twin Frozr: https://us.msi.com/Graphics-card/R7850-Twin-Frozr-2GD5OC.html
 

flobelix

Well-known member
Global Moderator
Joined
Jan 25, 2007
Messages
39,448
havoc4112000 said:
I've tried Afterburner but I cant make the fans spin with that either. Do fans die in pairs? I thought if it was a bad fan, one would die before the other. 
They can die alone or both at the same time.

havoc4112000 said:
I wonder if I have a fan with a 4 pin connection that would fit. That way I could do some troubleshooting.
You would need an adapter for graphics card pwm connector.
 

havoc4112000

New member
PRIVATE FIRST CLASS
Joined
Jan 22, 2015
Messages
9
flobelix date=1587583770 said:
They can die alone or both at the same time.

You would need an adapter for graphics card pwm connector.
Would you recommend fan replacement or troubleshooting first? I found these fans for $10.50 shipped https://www.ebay.com/itm/75mm-Sapphire-ASUS-MSI-HD6930-HD6950-HD7850-Dual-Fan-Replacement-4Pin-0-35A-R146/181376162384
 

havoc4112000

New member
PRIVATE FIRST CLASS
Joined
Jan 22, 2015
Messages
9
They can die alone or both at the same time.
Wow, cant believe I set this aside for 3 months! At $23 for fans I'm more likely to just throw the video card in my big box of electronics to be recycled. One question though... In Afterburner I can get the fans to turn on at 80%, anything below that wont turn on the fans. One fan starts up, then the other, but I cant remember if the 2nd one starts spinning at something higher than 80%. I think so, but I cant remember the number. Does that still mean its a fan problem? Or could it be something else on the board is broken that controls fan speed?
 

flobelix

Well-known member
Global Moderator
Joined
Jan 25, 2007
Messages
39,448
Yes, that is a fan problem. please don`t ask multiple times.
 

flobelix

Well-known member
Global Moderator
Joined
Jan 25, 2007
Messages
39,448
That is your decision. Maybe a 3rd party cooler or simply pointing a fan at the heatsink makes more sense after all. Would make a working card still usable.
 
You must log in or register to reply.
Top