I have a late 2009 iMac 27 that I bought used a few months. It was immaculate and had the drive wiped and the latest OSX (10.8.5)installed (and worked great until recently).
On start up (which is slower than normal) the screen will show little repeating windows across the screen and drop down screens will be muddled (see attached photo). It also seems to really bog down on basic tasks like opening the Launchpad which can take up to a minute. When I start it in Safe Mode, the graphics are much better (but not perfect) and processing speed is improved but still slow. Eventually, it always freezes up and I have to hold the power switch down to shut it off and restart it. Except for MS Office, i have very little software on the machine.
I'm new to Macs and not particulary computer savvy. I suspect a trip to the Genius Bar is in my future but wanted to ask you experts first for any advice you may have to diagnose or resolve the issue. Thanks!
Colin
On start up (which is slower than normal) the screen will show little repeating windows across the screen and drop down screens will be muddled (see attached photo). It also seems to really bog down on basic tasks like opening the Launchpad which can take up to a minute. When I start it in Safe Mode, the graphics are much better (but not perfect) and processing speed is improved but still slow. Eventually, it always freezes up and I have to hold the power switch down to shut it off and restart it. Except for MS Office, i have very little software on the machine.
I'm new to Macs and not particulary computer savvy. I suspect a trip to the Genius Bar is in my future but wanted to ask you experts first for any advice you may have to diagnose or resolve the issue. Thanks!
Colin