Hi - is there anybody out there that can help me? The screen of my iMac G5 (runs Mac OS X v 10.4) has just gone weird. It's like a photo negative but with some colours & all office/excel docs now have a black background with white numerals/letters, insted of the other way round. When I switch on, it appears the screen is going to be OK, but then suddenly changes to this weird set up. The only thing that's happened is that a few drops of water splashed onto the screen last night. Plse plse plse can somebody help!