Computer Question

[Professor S]

Yesterday, I came home to my computer giving me problems. (XP Related)

First, it rebooted itself everytme I logged in as the user.

Finally, I hard booted out of frustration.

Now, I get nothing. The computer is on, fans going, but the screen is black and the mother board doesn't even register. Just a black screen. The hard drive never initiates.

Any help?