HELP! Crazy screen

I just turned my PowerBook on tonight, and I've got these crazy blue/purple blotches all over my desktop. The blotches are fuzzy and blinking.

What is wrong with my PowerBook?

Recently I've also been experiencing problems with my date and time when I turn the computer on. It tells me that the date is set before March 2001.
I was told to bring my PowerBook into the Apple store for this problem in another thread, but I havent' had a chance yet.

Please help!

Not sure about the colors, but the clock resetting means that your systems cmos battery is dead and can't store the information about the time

Thanks for the fast reply.

I'm bringing my PowerBook to the Genius Bar tomorrow to have them look at it.
I even tried re-installing Tiger and yet the problem persists.

There are these patches of purple pixelation all over the screen. It flickers and and is incredibly distracting.

I have AppleCare, so I should be all set...

hey.. i have the same problem with the purple blotches.. ive had this problem for a year or so.. it's been a month since the last post so hopefully you resolved this issue... if so can you tell me what the problem is? im no longer under the apple care so maybe im screwed?

Reset the PRAM and the PMU....this may save you a trip to the apple store.

haha.. im sorry im a newb.. what's the PRAM and the PMU and how do i reset it? thanks for the fast reply though.. haha. didnt expect someone to answer that in 2 minutes..

well.. i looked it up and reset the PRAM.... (i still dont really know what it is).. but low and behold... the purple blotches returned.... blah.. and i read about the PMU but doesn't that reset everything on my mac? like... erase everything? arghh. i juss wanna get rid of these annoying blotches that come up from time to time...

no, resetting the PMU will not erase your Mac. you may have to reset the time and date, but other than that, everthing will be exactly the same