So my TiBook's been acting up, displaying nothing on the screen at boot-up and making the volume quacks. It also gongs on startup. I tried resetting the PRAM, which worked for about 1 minute till it told me my clock was wrong, then it began twitching the screen with horizontal lines. To top it all off, it doesn't sleep when you close the lid. Special. So, this is a really inopportune time for my laptop to crap itself, as school is approaching fast again. Anyone know how to correct this?