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