Hp Dc7800 full speed fan

[hotma]

Hi sir 

My computer works a full speed fan . I change a settings speed fan's the same problem result

I hope to help me please

[hotma]

I change Thermal paste of processor without any solutions 

[Echo_Lake]

@hotma
Thank you for posting on the HP Support Community.

I have a few troubleshooting steps we could try to fix the issue:  
Use the following steps:

• Shut down the computer, and then inspect and clean the exterior vents to remove dust buildup by blowing air through the vent openings. Dust can accumulate inside the vent openings and around internal cooling components, preventing the removal of heat.

For more information on reducing heat inside your computer, see Reducing Heat Inside the PC.

• After you remove the dust, turn on the computer. If the error message persists, continue with these steps.
• Perform a hard reset. Performing a hard reset can reset recorded thermal values in memory and enable you to use the computer again, even if only for a short time to access and save any important files before service.

For more information on performing a hard reset, see Use Hard Reset to Resolve Hardware and Software Issues.

• In some cases, updating the BIOS might help prevent this error from occurring.

For more information on how to update the BIOS, see Updating the BIOS.

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.