Excess heat can cause the fans to run faster and continuously which can potentially damage internal components and reduce the performance of the PC. Your PC may contain one or more fans to keep the internal components cool. Under normal working conditions, it is normal for a PC to generate a fair amount of heat and become warm to touch depending on usage. Fans that continue to spin very fast and make abnormal or loud noise might indicate a problem.
Common causes for fans not working, abnormal or loud fan noise, overheating:
Expand the sections below for more information and follow the troubleshooting steps.
Blocked air vents can cause serious performance issues by restricting air flow, this can cause the processor, memory (RAM) and other hardware to overheat which may lead to a potential hardware failure. Excessive heat can also cause a significant decrease in performance as most processors automatically reduce the speed of the processor to help compensate for heat-related problems. If you notice the system fan running constantly and making 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. Lint and dust accumulation prevents air from flowing around the cooling fins and causes the fan to work harder.
Your Dell PC may contain several fans to keep the internal components cool
How to clean computer fans - (2:01)
Best Way to Clean Your Notebook (Official Dell Tech Support) on YouTube - (2:57) English Only
Proper ventilation is important for better air circulation both outside and inside the PC. Adequate ventilation can help the PC fans perform efficiently and also increase their life span. You can also consider placing the PC in a cooler room in your house or office which can help prevent the PC from overheating.
Guidelines to ensure adequate ventilation
Running a hardware diagnostic test can help you identify hardware related problems and provide you troubleshooting steps to help resolve the issue. To determine if your Dell PC is experiencing a hardware problem, it is recommended that you first run a hardware diagnostic test on your PC. Dell offers both built-in and online diagnostics. Dell ePSA hardware diagnostic test will help check if the hardware devices are working correctly.
To learn more about Dell ePSA or PSA diagnostics, visit the Dell knowledge-base article Resolve Hardware Issues with Built-in and Online Diagnostics (ePSA or PSA Error Codes).
ePSA Pre-boot System Assessment (Official Dell Tech Support) on YouTube - (2:28) English Only
Use the Dell Interactive Support Agent (English only) to get information about ePSA or PSA diagnostic error codes. Alternatively, you can visit the SupportAssist Pre-Boot System Performance Check page to get more information about ePSA or PSA diagnostic error codes.
If the Dell ePSA diagnostics and other troubleshooting steps has not identified the cause of USB issue, we recommend that you consider running a hardware checkup using Dell SupportAssist. Dell SupportAssist diagnostic test helps you troubleshoot a problem and get automated fixes.
Performing Hardware Scan - Dell SupportAssist - (2:11)
Dell recommends updating the device drivers and BIOS as part of your scheduled update cycle. Device drivers and BIOS updates may contain feature enhancements or changes that will help keep your system software current and compatible with other system modules (hardware and software) as well as increased stability.
It is recommended that you installing the following device drivers to ensure optimal performance of fans in your PC.
To learn how to download and install a device driver on your Dell PC, refer to the Dell knowledge-base article How do I update the device drivers on a Dell PC?
How to download device drivers? - (2:07)
To learn how to download and update the BIOS on your Dell PC, refer to the Dell knowledge-base How to Download or Update the BIOS on a Dell PC?
Update your System Setup (BIOS) - (2:06)
Here are some additional steps that can help improve the performance of fans in your PC.
Windows updates can support your Windows operating system in many ways. Windows updates can solve specific problems, provide protection from malicious attacks, or even add new features to the operating system.
SupportAssist helps you optimize your PC by running a series of diagnostics to identify modifications to files and settings of your PC. Optimizing your PC improves your system speed, storage space availability, and stability by cleaning temporary files, tuning system performance and optimizing network.
Cleaning your files helps you remove redundant files, temporary folders, and other unnecessary clutter from your PC
Tuning your PC performance helps you adjust the power settings, registry, and memory allocation to maximize the processing speed of your PC.
Optimizing your network helps you ensure network connectivity and updates your PC settings to maintain an efficient and reliable network.
Optimize My System Using SupportAssist - (1:39)
Many applications or software run in the system tray, or also called notification area. These applications usually launch during startup and stay running in the background but remain hidden. Preventing these applications from launching during startup will not only improve the performance of your PC but also help the fans run slower comparatively due to lesser load on the processor (CPU).
Malware (virus, spyware, trojans, etc.,) can cause a PC fan to run constantly due to an overload on the processor (CPU), this in turn causes the fans to run constantly and fast. Spyware and other types of malware are a big cause of many PC problems. If you suspect your PC has been infected, there is a chance that malicious software may be running in the background and slowing down your PC.
It is recommended that you scan your PC with an anti-virus or anti-malware program. Windows 10 PC comes built-in with Windows Defender which provides basic protection against malware. Most Dell PCs also come with a basic anti-virus software pre-installed like McAfee but may require a subscription. There are many anti-virus or anti-malware programs (free to use and subscription based) that you may use like McAfee, Norton, Kaspersky, Trend Micro, etc., use the one installed on your PC to run a thorough or deep scan.
To learn more, refer to the Dell knowledge base article Protect Your Computer or Remove Malware in Microsoft Windows.
What is Malware (Official Dell Tech Support) on YouTube - (2:03) English Only
5 Ways to Check for Viruses (Official Dell Tech Support) on YouTube - (2:33) English Only
How to Fix Computer Fan Noise (Official Dell Tech Support) on YouTube - (4:24) English Only
How to Fix Overheating Laptop (Official Dell Tech Support) on YouTube - (2:02) English Only
How to Fix Overheating Desktop (Official Dell Tech Support) on YouTube - (2:12) English Only
How to Avoid Laptop Overheating (Official Dell Tech Support) on YouTube - (2:09) English Only
Article ID: SLN113205
Last Date Modified: 08/08/2018 10:14 AM
Thank you for your feedback.