hi all ...
my computer is perfectly fine.....CD drive is working fine....
when I put a bootable cd and restart my computer ....it doesn't boot.....there is no any error message. Pliz help I really want to boot and format my hard disk....

You have to make sure your CD drive has boot priority over your hard drive. This will be an option you can set in your BIOS (reached usually by pressing the DEL or F8 key or something while your computer is booting up). Where the option is and how you set it will depend on your system.

So just make the CD drive boot priority 1, and the hard drive priority 2.

Thanx Buddy.