If you notice the system fan running constantly and making an abnormal or loud noise, this might indicate the PC is not running as efficiently as possible, and/or clogged air vents. Once exposed, clean the case fans by blowing compressed air into every nook and cranny. In case you have found any bent or unbalanced blades, you should step in to fix it up. Build Help. Good thing is to clean the inside of the server for any dust that has accumulated. While you’re at it, give the motherboard, graphics cards, hard drive, power supply fan, and other components some attention. About Lenovo + About Lenovo. If you have a tool-free case, unlatch the hinges to open the panel. I'm going to try and be concise and to the point. Question: My computer fan is kicking on high every few minutes, help! It started after very briefly unplugging and plugging in the fan … Do your case and/or PSU fans suddenly become noisy when you turn on your PC, then eventually quiet down, in most cases, the fan is not going bad, just a little TLC is needed. Determine the type of noise you are hearing. A noisy case fan comes from the rear of the computer. Hello reddit I recently built my pc and it was pretty silent even when having pc fans always running at high but today I woke up and pc fans sound way louder than they ever had. Locating a noisy fan . For hardware. Turn off the power and remove the computer side panel to locate the noisy fan. Our Company News Pc case fans suddenly loud. Remove any objects near the computer. I opened the case and when my monitor lost signal I saw 2 GPU fans spinning faster than normal, others were spinning the same. From boot up to shut down, my CPU fan runs at full speed. This might cause due to the striking of the bent blade to other parts of the fan. It is extremely loud all the time. It’s the same process for what we do in case of larger fans. As soon as I click the restart button the fans … 0. My HP Pavilion desktop (Windows XP SP3 Media Remove the noisy fan and clean it with some compressed air. Open the case and see if you can find which fan is making the noise. Pc case fans suddenly loud. Visually inspect the fan and check that no wires or debris are stuck in or touching the fan blades. Build Help. Archived. There is no variability. Open the case by removing one or both panels using a screwdriver. In case the fan blades are imbalanced or bent, it might call up a humming or rattling noise in the fan. I am at my wit's end. Gently hold the fins of the fan while using the … Turn off the computer. Posted by 2 years ago. O/S power settings do not affect the speed. In addition, make sure there are no children or pets near the area. Fan stops or makes unusual noises. Solution for Fan Speed Optimization . 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