imac 20" garbage on screen and locks up
Hi everyone I am having some new issues with my 2008 iMac 20" 2.66ghz
The screen will occasionally turn to garbage (see attached) crashing the computer and sometimes it stays that way even after several resets. Other times the screen will turn right back to normal but the computer will stay locked up and need a hard reset. SSW is Lion and up to date although I'd love to downgrade to Snow Leopard to get Rosetta back.