GPU fans doesn't work. (Please I need help)

  • Hi there and welcome to PC Help Forum (PCHF), a more effective way to get the Tech Support you need!
    We have Experts in all areas of Tech, including Malware Removal, Crash Fixing and BSOD's , Microsoft Windows, Computer DIY and PC Hardware, Networking, Gaming, Tablets and iPads, General and Specific Software Support and so much more.

    Why not Click Here To Sign Up and start enjoying great FREE Tech Support.

    This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  • Hello everyone We want to personally apologize to everyone for the downtime that we've experienced. We are working to get everything back up as quickly as possible. Due to the issues we've had, your password will need to be reset. Please click the button that says "Forgot Your Password" and change it. We are working to have things back to normal. Emails are fixed and should now send properly. Thank you all for your patience. Thanks, PCHF Management
Status
Not open for further replies.
Ποσειδῶν

Ποσειδῶν

PCHF Member
Jan 25, 2021
9
0
26
Hello! I have a dell system Optiplex 9020
System:

CPU: intel core i3 - 4130 3,40ghz
RAM: 16gb ddr3 1600 mhz
VGA: asus gt 640 2gb ddr3
I changed the PSU from 290 watt to 450 watt
Okay so I installed my graphics card into the motherboard but the graphics card's fans doesn't work. Why? In my old motherboard the fans were working perfectly. What should I do? I am trying to solve this problem for 2 days straight and nothing happened. Please I need help. Furthermore, when the PC boots the GPU fans start to spin and then stops immediately.

-Thanks in advance!​
 
Rustys said:
Do the fans come on if under a load?
Some cards the fans may only come on when the card needs then to.
Click to expand...
The fan of my graphics card (when I had it in my old motherboard) was in use all of the time. Not only when the graphics card's temprature was rising up. When I am using the MSI afterburner and setting my GPU fan speed into 100% or 80% (manually) the fan is starting to spin. The problem is that my GPU's fan are not spining automatically only if I set it so. I don't know what to do anymore. My GPU is a GT 640 model. This model doesn't have the start and stop mode for the rising tempratures.

-Once again thank you!​
 
Is this something that just started since or that has been going on since the new motherboard?

Have you tried both display slots?

If you still have the old motherboard does the card work in that still?

Assemble the system outside of the case on a piece of cardboard and see if it works.
 
Rustys said:
Is this something that just started since or that has been going on since the new motherboard?

Have you tried both display slots?

If you still have the old motherboard does the card work in that still?

Assemble the system outside of the case on a piece of cardboard and see if it works.
Click to expand...
Yeah this started after I installed my gpu to the new motherboard. I have tried many things to make it work such as:

Removing my ram and let only one slot but the fan was doing the same thing, also I done what you said about the system outside the case long before I had written my problem here, In my old motherboard the card was working all the time. I don't know what it is honestly this is the first time I came across to this problem.

-Thank you for replying​
 
Rustys said:
So we are not repeating out selves on stuff you have attempted can you briefly describe what you have attempted and the outcome.

Have you tried safemode?



@Bruce and @phillpower2
I will be out for a few days
Click to expand...
Yeap I have tried safe mode, and the second slot of my motherboard but it is all the same. Also I have removed the CMO battery and replace it back. But again nothing.

-Thank you for replying​
 
does the graphics card require additional power connectors?
that PSU has a 24 pin ATX connector, the motherboard doesn't, how did you connect the two?
 
You have also made sure that the motherboard is not shoring out on the case?

Just to confirm when you assembled they system outside of the case the same thing was happening?
and under a load the fans are still off?
 
Rustys said:
You have also made sure that the motherboard is not shoring out on the case?

Just to confirm when you assembled they system outside of the case the same thing was happening?
and under a load the fans are still off?
Click to expand...
Yeap exactly that, I tested the system outside the case and the same thing happened. When I short-circuited the power pins with a screwdriver and the system had booted the GPU fan spun off no more than 1 sec (the same happened when I had the system inside the case) after that it stopped.

-Thank you for replying​
 
so to clarify....
that graphics card with the Dell motherboard with the new PSU and no GPU fans.
change only the PSU back to the Dell one and GPU fans work.
Correct?

if so, your problem is that ATX adapter not supplying whatever extra power is needed by the graphics card.
 
Bruce said:
so to clarify....
that graphics card with the Dell motherboard with the new PSU and no GPU fans.
change only the PSU back to the Dell one and GPU fans work.
Correct?

if so, your problem is that ATX adapter not supplying whatever extra power is needed by the graphics card.
Click to expand...
Uhm no I used my old PSU with the gt640 the 290 watt (and that was the time when I saw that the fan was not working). That's why I changed the PSU because I thought that the old Dell PSU (290 watt) could not support the GPU. So not it is not the PSU i have 3 PSUs and i tested the three of them in the Dell motherboard. My third one is an old 320 watt (and it did the same thing the GPU fan didn't spin.

-Thank you for replying​
 
I'd be trying another graphics card if you can get your hands on one, like say, from work, a friend, neighbour or such.
does the GPU fan spin freely when you try to manually spin it?
does its fan have its power cables securely connected to the GPU board?
 
Bruce said:
I'd be trying another graphics card if you can get your hands on one, like say, from work, a friend, neighbour or such.
does the GPU fan spin freely when you try to manually spin it?
does its fan have its power cables securely connected to the GPU board?
Click to expand...
I didn't try to run the system with a different graphics card. Also my GPU doesn't need an pcie output cable it gets its power only via the motherboard. So I am gonna use a different graphics card and I am gonna post my status later.

-Thank you for replying​
 
Status
Not open for further replies.
Top Bottom