HT201665: MacBook Air: How to find the serial number
Learn about MacBook Air: How to find the serial number
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Helpful answers
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Aug 17, 2015 1:48 PM in response to Mannakinby Kappy,★HelpfulMavericks and later
Open Activity Monitor in the Utilities folder. Select All Processes from the View menu. Click on the CPU tab in the toolbar. Click twice on the %CPU column header to display in descending order. Locate the FireFox process that is using a large amount of %CPU, then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps.
You should be able to shut down the computer by holding down the Power button until the computer turns off.
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Aug 17, 2015 3:33 PM in response to Mannakinby Linc Davis,tried doing a hard reboot
How did you do that and what exactly happened?
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Aug 18, 2015 10:57 AM in response to Linc Davisby Mannakin,I tried a shutdown from the power button. No luck. I tried a shutdown from the Apple menu. No luck. Both times it told me that the computer was already shutting down and I left it alone for HOURS without it shutting down.
UPDATE: I managed to get the MacBook to shut down after holding the power button for a RIDICULOUS amount of time. I then reset the SMC and PRM and all seems to be working well now. My wife's MacBook Air is now running Yosemite and working well.
Thanks for your help Kappy and Linc!
- Matt