Q: My Mac Air's fan is running loud and battery won't charge?

Reset SMC.     http://support.apple.com/kb/HT3964

Choose the method for:

"Resetting SMC on portables with a battery you should not remove on your own".

If this does not help, contact Apple.

Genius Bar reservation:

http://www.apple.com/retail/geniusbar/

Best.

Had a problem with loud fan that wouldn't turn off.

Tried resetting SMC and PRAM. No result.

Found out that if you go to the activity monitor and check the CPU useage, you can

see which app is sucking up the power. In my case it was a printer file that was running about 300 percent.

I deleted the file and the noise stopped, fan went back to normal.

applications>utilities>activity monitor chose the CPU tab.

to delete

Apple>system preferences> (in my case 'printers and faxes')

Thanks. This helped. It's Safari running wild so now I'll have to work that one out. Any ideas, anyone?

rrosaa

You'd get more help by starting your own post.

I was trying everything, I had an old printer that had items in the que that was causing this!! thank you!!

I had this exact issue. Turned on laptop and the fan was running at full speed and the battery indicator was missing on the desktop bar. Also, the light on the battery charger did not light up. I did the SMC reset for non removable battery and it worked perfectly. Thank you for the helpful post!

SMC reset worked for me. Thanks a ton!