Here’s how to fix a laptop fan constantly running all the time. HOWTO: Fix Surface Book getting hot, fan running constantly. Dell Latitude 7400 Running Hot and Loud with Heat & Fan Issue 01/03/2021 01/03/2021 gfisk Computer Is your Dell Latitude laptop very hot and you hear the fan running loudly – but there’s no high CPU usage and nothing apparent causing the issue and it may randomly stop running hot and loud 1 – 8hrs from now? The fan is constantly running and the noise is louder than my 4 year old Dell. If your Surface is running really hot, there may be an application or system process that is running at high CPU. I read your article, vacuumed the side air vent (what could it hurt to try), and my laptop is quiet as a kitten two hours later. When a computer fan spins loudly for a long period of time, there might be an issue with a fan, or the computer might be overheating. Then, I accepted a Dell Update about three weeks ago and everything changed. Surface laptop 3 running hot, fan always running and poor performance Dear all, I received my i7 surface laptop 3, 5 weeks ago and straight out of the box it has been running hot, with the fan persistently running and very slow performance. No change. According to Speccy my core temp was spiking in the 80C range during this. Over time these processes should subside. When the temperature of the laptop rises, the fan will start to rotate. Some PCs run their fans at full blast all the time—this is especially common if you built your own PC and haven't done any fine-tuning of the cooling hardware. The fan was no longer running as much as it was before. I updated the BIOS to the latest one (1.6.2, released 1/25/2018) and rebooted. Laptop fan is an important component of the laptop cooling system. Method 1. Hello Yesterday I got the HP Pavilion x360 Convertible and the model number is 15-br077cl. However, if the laptop does not run any software at all, and your laptop fan always on, that may be caused by the system set up. I have installed all the updates and used the diagnostic toolkit. This was annoying, but not tragic, as the laptop performed well. (in my case, my laptop Hp Pavilion had been upgraded to W10 home 2 weeks ago and the fun was running 100% everytimes). The laptop was relatively new – roughly three months old – and the fan (during the first three months of use) ran almost constantly. Adjust the power settings, clean the fan vents, check for suspicious processes, and then update the BIOS to help reduce the internal temperature. My laptop has been “running hot” for years–fan constantly on high–figured it was just part of the laptop being old. Bad thermal sensor (computer thinks it's overheating when it's not). 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