How to Fix GPU Fans That Are Not Spinning

Published 2026-10-16 · LuxuriousComputers Repair

You turn on your computer and notice the fans on your graphics card are not spinning. The GPU is installed, the screen displays an image, but the fans sit completely still. Before you panic about a dead card, understand that modern GPUs are designed to stop their fans under light loads — it is a feature, not a failure. But if the fans never spin even under heavy load, or if your GPU temperatures are climbing into the 90s, something needs attention.

Check if zero-RPM mode is active

Most modern graphics cards from NVIDIA and AMD use a zero-RPM or silent mode feature. The fans do not spin until the GPU reaches a threshold temperature, typically between 50 and 60 degrees Celsius. Under light desktop use, web browsing, or video playback, the GPU stays cool enough that the fans never need to turn on.

To test whether zero-RPM mode is the reason your fans are stopped:

1. Open a monitoring tool like MSI Afterburner, HWMonitor, or GPU-Z (all free)
2. Check the current GPU temperature. If it is below 50 to 55 degrees, the fans are likely stopped intentionally
3. Run a demanding application — a game, a benchmark like FurMark or Unigine Heaven, or a GPU stress test
4. Watch the temperature climb. Once it passes the threshold (usually 55 to 60 degrees), the fans should start spinning
5. If the fans spin under load, everything is working correctly. This is normal passive cooling behavior

If you prefer the fans to always spin, MSI Afterburner lets you set a custom fan curve that keeps fans at a low RPM even at idle temperatures. Open Afterburner, click the gear icon, go to the Fan tab, enable manual fan control, and set the curve so the minimum speed is 30 to 40 percent instead of zero.

Check the power connections

Graphics cards that require supplemental power (most mid-range and all high-end cards) have 6-pin, 8-pin, or 12-pin power connectors on the top or end of the card. If these are not connected or not fully seated, the card may display an image at reduced performance but the fans may not operate correctly.

1. Shut down the computer and unplug the power cable from the wall
2. Open the side panel and locate the GPU power connectors
3. Check that every power connector on the card has a cable plugged in. Some cards have two 8-pin connectors — both must be connected
4. Unplug each power connector and reseat it firmly until the clip clicks into place
5. Check the other end of the cables where they connect to the power supply. Reseat those connections as well
6. Plug in, power on, and test

If your power supply does not have enough PCIe power connectors for the card, the card may run in a limited mode with fans disabled. Never use adapters like dual-Molex-to-PCIe unless the power supply genuinely cannot provide the correct cables — and even then, consider upgrading the power supply instead.

Clean dust buildup

Dust accumulation on the fan blades and heatsink fins can physically prevent fans from spinning, especially if the dust has compacted into the bearing area or between the blade tips and the fan shroud.

1. Shut down and unplug the computer
2. Use compressed air to blow dust out of the GPU fans and heatsink. Hold each fan blade still with a finger while blowing — letting the fan spin freely from compressed air can damage the bearing
3. If dust is caked on, use a soft brush (a clean, dry paintbrush works well) to loosen it before using compressed air
4. Check that the fan blades spin freely by gently pushing them with your finger. They should rotate smoothly with minimal resistance. If a fan feels stiff, grinds, or wobbles, the bearing may be failing

Check for a failed fan

GPU fans are mechanical components that wear out over time. A fan with a failing bearing may spin intermittently, make grinding or clicking noises, or stop entirely. If only one fan on a dual or triple fan card has stopped while the others still work, the stopped fan has likely failed.

Test individual fans:

1. Open MSI Afterburner or your GPU manufacturer's software (EVGA Precision, ASUS GPU Tweak, Gigabyte Aorus Engine)
2. Set the fan speed to 100 percent manually
3. Observe which fans spin and which do not. A fan that does not spin at 100 percent command is either mechanically failed or has a disconnected cable

Replacement fans for specific GPU models are available online. Search for your exact GPU model followed by replacement fan — for example, EVGA RTX 3070 replacement fan. Installation typically involves removing 4 to 6 small screws on the back of the card's shroud, unplugging the old fan's connector from the PCB, and connecting the new one. This is a straightforward repair if you are comfortable working with small components.

Reseat the graphics card

A GPU that is not fully seated in the PCIe slot can behave unpredictably, including displaying an image but not powering all components correctly.

1. Shut down and unplug the computer
2. Remove the GPU power cables
3. Unscrew the bracket screws holding the card to the case
4. Press the release latch on the PCIe slot and carefully pull the card straight out
5. Inspect the PCIe gold contacts on the card for any visible damage or contamination. Clean them gently with a pencil eraser if they appear dull or oxidized, then wipe with isopropyl alcohol
6. Reinsert the card firmly into the slot until the retention latch clicks. Press down evenly — do not rock the card
7. Reconnect power cables, screw in the bracket, and test

Update or reinstall GPU drivers

While fan control is primarily a hardware and firmware function, the GPU driver includes the fan control logic for zero-RPM mode and custom fan curves. A corrupted or outdated driver can occasionally cause fan control issues.

1. Download the latest driver from NVIDIA (nvidia.com/drivers) or AMD (amd.com/support)
2. For a clean installation, use Display Driver Uninstaller (DDU) in Windows Safe Mode to completely remove the old driver before installing the new one
3. Install the new driver and restart
4. Check if fan behavior has changed

Check BIOS and firmware

Some GPU manufacturers release firmware (VBIOS) updates that fix fan control bugs. Check your GPU manufacturer's support page for your specific card model. VBIOS updates are less common than driver updates but do happen, particularly for cards that had fan control issues at launch.

Also check your motherboard BIOS settings. Some motherboards have a setting that affects PCIe power delivery or slot configuration that can impact GPU behavior. Make sure the PCIe slot is set to the correct generation (Auto or Gen 4 for modern cards) and that no power-saving settings are artificially limiting the slot.

When the GPU itself is failing

If the fans worked previously and now do not respond to any of the above fixes, the fan controller circuit on the GPU PCB may have failed. Signs of a GPU board-level failure affecting fans include:

• Fans do not spin at any manually set speed through software
• The GPU temperature climbs to thermal throttling (typically 100 to 110 degrees) and the fans still do not respond
• Other GPU functions are also erratic — display artifacts, crashes under load, or the card disappearing from Device Manager

A board-level fan controller failure is not a DIY repair. The card needs professional diagnosis to determine whether the fan header, the controller IC, or the GPU itself has failed.

GPU fan help in Marion

If your GPU fans are not spinning and you have tried the steps above without success, LuxuriousComputers Repair can diagnose whether the issue is a fan failure, a power delivery problem, or a board-level fault, and replace failed fans or recommend next steps for your specific card.