Sleep problem with my iMac

Started 6 months ago | Questions thread
ForumParentFirstPreviousNextNext unread
Flat view
LDBOK
Contributing MemberPosts: 579Gear list
Like?
Sleep problem with my iMac
6 months ago

I am having a strange problem with my 2009 iMac running Mountain Lion with latest update installed. After I put it to sleep it wakes up every couple of minutes (I can hear the fan and the hard drive start up, but the monitor doesn't come on) and then it goes back to sleep. It does this over and over again as long as it is in sleep mode. Does anyone have any idea what is causing this? I don't want to have to shut it completely down after each use but I don't think the extra wear and tear on the computer would be good for it. Any help appreciated.

 LDBOK's gear list:LDBOK's gear list
Pentax MX-1 Pentax K20D Pentax K-5 Pentax K-3 Pentax smc DA 15mm F4 ED AL Limited +12 more
ANSWER:
ForumParentFirstPreviousNextNext unread
Flat view
Post (hide subjects)Posted by
ForumParentFirstPreviousNextNext unread
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow