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