- Check the power cable is securely connected to the power outlet and computer.
- Ensure the computer is on and plugged into a surge protector.
- Check the internal fan to see if it is blocked.
- Check the fan is running and not too noisy.
- Unplug all non-essential devices from the computer.
- Make sure the heatsink is clean and installed properly.
- Check that the graphics card is securely installed.
- Listen for any strange noises coming from inside the computer.
- Check if any additional parts, such as a CD-ROM drive or hard drive, are making a noise.
- Update the device driver for the device causing the noise if possible.