Air vents may be located in various places depending on the pc model.
Dell optiplex cpu fan error.
All of the fans inside the system are running normally.
There is no fan on the hd but yet we get the hd fan failure error and system fan at start.
New optiplex 390 fan failure message we believe it is a sensor error.
Refer to the user manual of your dell pc.
This forum is mainly user to user with occasional moderation or additional knowledge by a rockstar or dell employee.
Check the air vents on the pc for dust or debris.
We ve swapped the cpu fan and the front case fan from other working optiplex 3010 s and the message still appears.
Cleaning the air vents on your dell pc.
Previous rear fan failure press f1 to continue.
It does not seem like the motherboard is sensing the fan s properly.
Turn off the pc.
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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.
I m a big fan of dell a dell user and not an employee.
If you have an optiplex stating its model number and size speeds troubleshooting.