Can you share more details about the PC that you use the XP on?
Actually, I'm interested in:
1. What type of configuration does the PC have?
2. Are you talking about a desktop PC or a laptop?
3. Has anything happened to your computer prior to that?
4. Does your PC have a dedicated video card or it works with an integrated one?
5. Is your PC emitting any sound signal when you try to start it and showing the blank screen?