Can't boot into Windows XP

Hi!
I have an e-machines computer. After going through the normal boot up sequence when it gets to the windows xp logo. The display says it doesn't have a signal. I tried with different monitor, cable and video card. But it doesn't work. i unpluged DVD/CD drive and booted whithout it. Still not working. Also does the same thing in safe mode.

Can ANYONE HELP...???

Does the computer gets shut down at any point...?

Weather video card is on board or its an installed video card...?
Weather it happened before sometime in past??

No! its happening first time!
Video Card is on the board & No computer dosn't shut down!

ok!
This May be a display problem.... !
This Link May Help You...!
Monitor Display Problem

Try solving with it!

No its still not working!
Please help me with further assitance...???

Then it must be a software problem!
You have to format the hard disk!
Try Loading with bootable CD...!
Then Format the Harddisk & Then Install all the software before configuring the internet!
Then install the lisence Anti Virus.
Then Go to Control Panel & turn off Automatic Updates off & FireWall Protection off.