Laptop boots to the startup screen (Apple logo and spinning wheel). After that there are horizontal lines that appear (the logo and wheel are offset). I have reset the PRAM, and drained the battery. The last 2 times that I have drained the battery, the system will boot up normally and give me access to my desktop for a couple of minutes before the screen will wig-out. The mouse will still move, but the windows become unresponsive. After a minute of this the entire computer will freeze. This time the computer booted up normally and I left it until it got to the screen saver. The screen saver is not moving, but the mouse was responsive until the whole computer froze again. The battery has been less than stellar on the machine for the past 8 months (I'm lucky to get 15 minutes off the cord). I have my doubts that it has to do with the battery because of the lines that will show up in the screen right before everything starts to wig-out. Any suggestions?