[the original post got deleted, so this is a slightly shorter recap] I have had my PowerBook g4 (12", 512 RAM, no superdrive) for two months. Was working on a Word document while opening a LARGE .pdf file in Safari. Computer became really really SLUGGISH; left it alone for 20 minutes to let the PB sort itself out. The .pdf file finally loaded, but the Word document was still stuck on a command. Haven't studied the shortcuts to force quit and so on, so held down power button and completely shut it off. Tried to restart. HD fan comes on, and startup noise is made...but the screen is still blank (black!). No blue apple screen or anything. Tried again, same response (has happened before, but have been able to get it going again eventually). I have tried to adjust the brightness and have gone through the entire PowerBook troubleshooting tutorial and book, to no avail. Also, no peripheral devices are being recognized (mouse will not light up, the screen also will not respond to tapping the touchpad). I cannot even get to the basic boot screen. Called AppleCare today, they said that the backlight has gone out (blindness!!), and I will have to send it in. I don't believe it, especially with a two-month old brand-new PB. Any thoughts or suggestions as to what to do? I'm good with computers, just tell me EXACTLY what to do (I have a 2 day turnaround, before I have to send the packet back in to Apple with my computer) I don't have the startup disks with me, though. Not having this computer is a MAJOR inconveince, btw. I need it both for school and work. And I have no other Mac and Fireware to do the Target Disk mode to. Please help!!!