Blue Screen & Automaticlly Rebooting.

Hello,
I'm Dark Apparition, I own a IBM, Pentium 4, Windows xp home edition.
I have had my computer for roughly around a year now, And it has been through a lot recently.
Between conflikr viruses, Worms, Trojans, And now this, It was working fine after I got it fixed,
And then all of a sudden, I turn it on, It comes up on a black screen with the following:
(Can't exactly remember all of it correctly but,);
-Words-
Start Windows in: ,
Safe Mode: ,
Safe Mode with networking: ,
Safe Mode with something that starts with a "c" and "p" (Can't remember" ,
And Last good configuration something...
I used the arrow keys to highlight "Safe Mode" and hit enter,
And it did something, I don't know what,
And then it skipped on to where it usually starts up,
And it doesn't finish loading, It doesn't go to the page,
Where I should enter my password to access my computer,
A blue screen pops up, And it says something like:
"Windows has detected an error due to a recent hardware or somewhere change,
And is shutting down to prevent damage."
I can't remember the exact words, But that's close I think,
Anyhow, After that pops up for 5 seconds, It restarts itself,
And I did the same thing, And the same thing happened.
I don't know what to do, And I can't live without my computer,
So please, Could you guide me through on fixing it?
Best regards;
Dark Apparition.