I format my computer now every time istart my computer it does not boot until window cd rom is inserted please answer how to stop this

I would suggest to do a repair installation of windows to hopefully prevent that from happening, hopefully this would allow windows to boot from the hard drive without the cd in the drive.

First check over info below to see if you followed these instructions when installing
Geek to Live: How to format your hard drive and install Windows XP from scratch - Feature - Lifehacker


To do a repair installation, info below
Repair Installation
A Repair Install will replace the system files with the files on the XP CD used for the Repair Install. It will leave your applications and settings intact, but Windows updates will need to be reapplied.

http://www.microsoft.com/windowsxp/u...ps/doug92.mspx