A trimming sound followed by a high-pitched noise coming from your brand new laptop fan could indicate a potential issue with the fan itself. Here are a few possible reasons for this problem:
Fan Bearing Issue: The trimming sound could be caused by a problem with the fan bearings. Over time, the bearings may wear out or become misaligned, resulting in unusual noises. The high-pitched noise that follows could be a result of increased friction or an imbalance in the fan.
Fan Blade Obstruction: There might be an object or debris obstructing the fan blades, causing the trimming sound. When the fan spins, it could hit the obstruction, leading to the subsequent high-pitched noise.
Fan Speed Variation: Some laptops have fans that adjust their speed based on temperature and system load. The trimming sound could occur when the fan speed changes abruptly, and the high-pitched noise might be the sound of the fan spinning at high speed to cool down the laptop.
It's important to address this issue promptly, as it could indicate a potential hardware problem. Here are a few steps you can take to troubleshoot:
Check for obstructions: Turn off your laptop and visually inspect the fan area for any visible obstructions. If you find any debris or objects, carefully remove them using compressed air or a soft brush.
Update your BIOS and drivers: Sometimes, firmware or driver updates can resolve fan-related issues. Visit the manufacturer's website and download the latest BIOS firmware and fan driver updates for your specific laptop model.
Monitor temperatures: Use software utilities to monitor your laptop's temperature. Excessive heat can cause fans to work harder and produce unusual noises. If you notice high temperatures, it could indicate a cooling problem, and you may need to clean the fan or apply fresh thermal paste.
If the issue persists after these troubleshooting steps, it is recommended to contact the laptop manufacturer's customer support or take the laptop to an authorized service center for further examination and repair. They will have the expertise to diagnose and fix any hardware-related problems with your laptop's fan.