MacBook Pro fan running constantly

fanmacmacbook pro

I have noticed that my MacBook Pro's fan is constantly on – it sounds like it is trying to cool down and it does this all day long.

It did not used to do before I started using an external monitor.

Any ideas?

Best Answer

A little more help would be amazing. For example Year, processor, graphics, silver or black keys? If you have an older MBP (one with the silver keys 2'1 series) then their 9xxx Nvidia graphics cards are known to be faulty. Perhaps the graphics card is having to work double time to deal with the external monitor and the fact that it could be "crapping out."

Another solution is to open Activity Monitor (either through Applications -> Utilities) and look for a process that is using an abnormal amount of CPU power.

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