Use a can of compressed air to remove dust or debris from the air vents dust filters if any and cooling fan fins.
Dell optiplex cpu fan error.
It does not seem like the motherboard is sensing the fan s properly.
Better you go to the dell service center with your purchase bill.
Dell optiplex 755 removing cpu fan i would like to suggest you please don t go yourself to check that because it may harm the system if any wrong thing happens.
Air vents may be located in various places depending on the pc model.
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This forum is mainly user to user with occasional moderation or additional knowledge by a rockstar or dell employee.
Previous rear fan failure press f1 to continue.
There is a sensor for temperature on the board and on the power supply.
All of the fans inside the system are running normally.
Turn off the pc.
We ve swapped the cpu fan and the front case fan from other working optiplex 3010 s and the message still appears.
If you have an optiplex stating its model number and size speeds troubleshooting.
Refer to the user manual of your dell pc.
I m a big fan of dell a dell user and not an employee.
Cleaning the air vents on your dell pc.