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by Linc Davis,★HelpfulSep 15, 2015 8:57 AM in response to Calvertfromnsw
Linc Davis
Sep 15, 2015 8:57 AM
in response to Calvertfromnsw
Level 10 (208,037 points)
ApplicationsIt's normal for the fan to run continuously, and the machine does need servicing to restore the serial number. If you feel that the fan is louder than usual, see below.
Apps can affect Mac performance, battery runtime, temperature, and fan activity - Apple Support
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Sep 15, 2015 8:56 AM in response to Calvertfromnswby Calvertfromnsw,Thanks Linc, that is helpful. I had shut down every App, removed anything running in the back ground etc etc. I tried downloading various Versions of SMC updates and was unable to install due to (probably) the Serial number being 'lost'. I think I'll wait until I return to Australia because I'm moving regularly from place to place across France. Thanks again for your help, but the problem persists - I'll just have to put up with it and use it when needed. Emails etc are taken care of by 3 iPhones and an iPad Mini. The MacBook is for the office work. Cheers.