Computer makes a “Whistle” noise

A computer usually makes a weird “whistling” sound if it has detected a problem over the temperature of your processor. This can come from an overheating issue caused by the absence or defect in the CPU/ power supply fans. If the fans cannot provide sufficient ventilation to your computer’s components, this will cause your hardware to overheat and damage the components inside the CPU. More than often, your computer will shut down just after this “whistling” noise to prevent jeopardizing your computer system.

Sometimes, cables from inside your CPU might also be blocking the fan from working properly. They can get stuck in between the fans and be the source of this weird noise.

To solve this issue, follow the steps below:

• Step 1: Shut down your computer immediately (if it has not already shut down automatically)
• Step 2: Unplug the power supply cable from the CPU and make sure that you have unplugged any devices before unscrewing the CPU cover.
• Step 3: Make sure that no cables are obstructing the fans and that the right cables are plugged in the fans.
• Step 4: Remove any dust particles that might have accumulated inside the CPU with a compressed air sprayer designed for this task. If you do not have one, you can make use of a soft paint brush.
• Step 5: Without closing the CPU, be very careful while connecting the power cable again. Switch the CPU on to check whether the fans are working properly.
• Step 6: If this is not the case, you might need to buy new fans to have a proper ventilation for your CPU ( you can aquire the help of a technitian for this issue)