GPU fan not working - help, not solved!

[Eggy]

Hi, I recently decided to make some fixes to my previous gaming computer (4+ years old), and am now sitting here with a functional GPU without a working fan...

 

I honestly don't know all the specs, partially because this was a pre-built computer:

CPU: AMD FX-8320 eight core, w stock fan

MoBo: ? (AM3+)

GPU: AMD Radeon R7 200 Series

RAM: 8GB

PSU: 500W

 

dxdiag GPU:

- Name: AMD Radeon R7 200 Series

- Producer: Advanced Micro Devices Inc.

- Chipset: AMD Radeon Graphics Processor (0x6658)

- DAC-type: Internal DAC (400 MHz)

- Circa total memory: 5833 MB

 

My goal was to:
- Remove most of the dust inside the computer, including inside CPU fan and inside the GPU

- Change thermal paste both for the CPU and the GPU

 

I didn't do any benchmarks, nor did I properly check the temps before I demounted it. All I remember is that the CPU and GPU were getting quite hot, which was the main reason I did it. All fans were functional before this.

 

I started off cleaned the insides carefully with a piece of cloth (not on the MoBo or GPU). I then demounted the entire computer, so that I could clean each part properly. First off was the GPU. I removed the screws and found a whole bunch of dust inside. I removed the fan cable and used compressed air to remove most of the dust. I removed the thermal paste and reapplied some Noctua NT-H1. I then put the card back together (yes, I plugged the fan cable back in).

 

Next up was the CPU and MoBo. Here, I encountered some problems. I found that the stock cooler, after removing all screws and levers, was completely stuck in the CPU. No matter how much I twisted and dragged it, it wouldn't come off. I ended up using a hairdryer to heat up the thermal paste. I almost burnt my finger touching the heat sink, so I figured it was time to try again. I tried the same procedure, and this time the cooler came off... together with the CPU. I managed to separate the cooler and the CPU now, but I realized the CPU had a few bent pins. I spent a long time straightening the pins so that it would fit into the motherboard again.

 

After putting the computer back together, I turned on the power, finding that I didn't get any sort of signal. The fans were running, but no display or anything. I tried a couple of times, but it didn't seem to work. I then realized I had forgotten to plug in the CPU power cable (hidden under one of the fans). Plugged it in and didn't get a display until the second boot. At this point, the computer started and everything was working (logged into my user). I opened MSI Afterburner and noticed that the GPU temperatures were fairly cool (30-40 degrees), but steadily rising. I then saw that the fan on the GPU was not spinning. After a few minutes the temperatures were getting quite high, 60-70 degrees, and the fans were still not spinning. MSI Afterburner showed that the fans were spinning at a quite high %. I also noticed that the CPU temps, which were about 30 degrees when I first launched MSI Afterburner, now had dropped to a steady 6-8 degrees C, room temp is ~20. This I also find quite worrying.

 

 

Info:

- Fans on GPU are never spinning, not on boot, not during high temps or when turning off the computer. Minimum fan speed for this card is 20%.

- CPU shows 30-40 degrees C on startup, after a while they drop to under 10 degrees C. Afterburner and HWmonitor shows the same. 

 

Anyone out there who can find a solution to my two problems?

1. GPU functional, but fan never spinning

2. Incorrect CPU temps.

 

 

 

Thanks

Eggy

[FloRolf]

AMD bulldozer is known to display wrong Temps. But lower is nothing to worry about, lol. It could be -50°C and still be fine. 

 

As for GPU, are you sure that the fans aren't spinning? Have you seen it? 

[Eggy]

I am worried that the CPU fan might not spin sufficiently since the temps are showing much cooler than they actually are.

 

Yes, I have the side panel open so I can look at the GPU while I am booting. Fan is not spinning.

[Eggy]

Nobody?

[dragonhart6505]

Check the fan header, maybe you didn't connect it right or at all. Will require dismantling the card and reapplying paste again though, depending on the placement of the header. Really seems like that could be the only issue I can think of if the fans worked previously

[Eggy]

Thanks for reply. I'll take a look once I have some spare time

[HarisM2002]

I have the same problem, if you found a solution, pls reply