iBook won't wake from sleep, totally unresponsive
I'm using a G4 iBook, mid-late 2004, running OSX 10.3.9.
This morning I turned on my computer, checked my e-mail etc, then closed the display and went to work.
When I came home, I opened the display, and it wouldn't wake up. The sleep light is just on. Not pulsing, just fully white. Holding down the power key didn't have an effect, and control/cmd/power didn't do anything. There was power going to my USB mouse as its optical sensor was lit still.
While checking the battery, I unlocked it and it popped out for an instant. I relocked it, and when I opened the display there were lots of vertical lines and colors on the screen. Although probably not the best idea, I took out the battery to see if i could get it to shut down, but when i put it back in, it returned to the same state, only now the screen is black.
Any suggestions? To be honest, I'm not sure if i held down the power button for as long as 10 seconds to shut it down before, but I might have. If I can get it to shut down I'll try resetting the PRAM/NVRAM and then the Power Management Unit if i have to. Any other tips or ideas on what it could be would be very welcome.
Also, I had a hard drive die on me about a year and a half ago and had it replaced. Doesn't seem like that's the issue here though. My Applecare is obviously out by now, but if worse comes to worse I'll bring it into the Apple Store and see what they can do.
Thanks in advance.
G4 iBook, Mac OS X (10.3.9)