I have a compaq presario v2000. A while ago I tried to turn it in on. Sometimes it will boot all the way up regularly and then the screen goes blue with white lettering on it that i cant read because the computer just shuts off after 1 second. This happens consistently. I don't know what the problem is. Sometimes I can't even get the damn thing to boot up. I can start iot in safe mode and all of that business fine. I really need help fixing this thing. Any ideas?

If you can get into Safe Mode see if any of the ideas in this thread help:

http://www.d-a-l.com/help/showthread.php?t=50190

Safe Mode with Networking should let you online as well.