I have a 17" powerbook G4. A few times a day the screen goes dark. I have to unplug and remove the battery to get it back up again. I'm pretty sure its the actual screen that is the problem, rather than hard drive. Its quite a lot of $$$ to repair, and I've noticed this on craigs list 20" Cinema Display monitor in great condition. Serial #N530635SNAF. Depending on your Mac, you may need a DVI to ADC Display Adapter. Check out Apple.com for more information - search by product number: M8893ZM/A Do you think I could hook this up and save my screen for when I'm away from home? Would I need a DVI to ADC? And are they $$$? Thank you for any advice!