I have an IMAC 24 inch. It is perhaps a 2011 model. It has shut down for no apparent reason. I recently installed Norton's Ant-virus and wonder if that would be causing the computer to shut down.
Kathy
iPod touch, iOS 4.3.2
Please uninstall all antivirus software installed per the developers instructions. If you use any cleaning, or other third party maintenance utiltiies please uninstall those as well and your iMac should return to normal function. OS X does not need any of these apps as it is extremely secure. There are no viruses for OS X however there is a small amount of malware which is easily avoided by:
Also, if your iMac is a 2011 model the display size is either 21.5" or 27", 24" iMacs were discontinued in mid 2009.
Finally when posting, please advise what version of OS X is installed. IOS is for IOS devices such as iPods, iPhones, & iPads. Macs use OS X.
Thanks for your help. I have Yosemite 10.10,5 installed. I will uninstall Norton's. Do you have any recommendation for a good anti-virus program to use??
Do you have any recommendation for a good anti-virus program to use??
Yes, NONE!!!!!!!!!!!!!! Please re-read my first post!
Kathy ...
Better to remove Norton.
Follow the instructions here > Uninstall your Norton product using Norton Removal Tool
If your Mac is running v10.7 Lion or later, to avoid malware, make sure Gatekeeper is enabled.
Make sure Mac App Store and identified developers is selected. If that area is grayed out, click the padlock icon to proceed.
If you aren't sure which OS X is installed on your Mac, click your Apple top left in your screen. F
From the drop down menu click: About This Mac
The version is noted here.
My 24 inch IMAC shuts down for no apparent reason.
