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Reducing Fan Noise

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This document pertains to Presario, Pavilion, G and Envy series notebook PCs.
A computer contains several fans to keep it cool. When a computer is first turned on, the fans normally spin at high speed and create some noise. After 5 to 20 seconds, however, the fan noise stops. Fans that continue to spin at high speed or make strange noises might indicate a problem. If the fan is still noisy after 20 seconds or if a fan suddenly starts making unusual noises, use the following steps to troubleshoot for problems.

Adjust the power settings

Some power settings cause fans to spin too fast for a typical household environment. If you are using the computer in a quiet environment where temperatures remain steady and mild (up to 30 degrees Celsius or 86 degrees Fahrenheit), adjust the power settings to a lower energy usage. Use the following steps to adjust the power settings:
  1. Turn on the computer and wait for Windows to open.
  2. Click Start , and type power plan in the Search box. In the search results, click Choose a power plan.
    The Select a power plan page displays.
  3. Click Power Saver and close the window.
  4. Restart the computer.
If the fan is still noisy, continue to the next step.

Download and install the latest BIOS

Use the following steps to find, download, and install the latest BIOS for your computer.
  1. Turn on the computer and wait for Windows to open.
  2. Connect to the Internet.
  3. Download and install the latest BIOS update from hp.com. For more information, see Updating the BIOS or ROM .
  4. Restart the computer after the BIOS has been updated.
If the fan is still noisy, continue to the next step.

Clean the air vents

The sound of the fan running all the time may the first clue that your PC is not running as efficiently as possible and that you may have a problem with accumulated dust clogging air vents. For more information, see Reducing Heat and Fan Noise by Cleaning Air Vents .

Contact HP

If the previous steps do not reduce the fan noise from your computer, there may be a mechanical problem with the fan or fan assembly. Contact HP for further assistance.

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