Psychedelic screen
I've recently started having some intermittent problems with my iMac. More specifically it is (appearing to) affecting the screen. I've a 2010 iMac running OSX10.6.8 and with a 2.93Ghz Intel Core 2 Duo. 8gb of RAM.
Basically, the screen just goes from working fine to: either as if it has taken some psychadelic concoction, or it just goes a grey shade. Sometimes, if I press the on/off switch quickly I can get the screen back. But other times I have to start from scratch and switch off completely. It seems mainly to occur while viwing the internet and last night really didn't like an airline flights webpage. It became a real pain in the end - especially as I was trying to book the flights I wanted. I'll try and attach a photo.
Hope someone can help and that the 'fix' isn't too expensive . . .
Thanks
John
Mac OS X (10.6.8)