Hi I need help. I have an old computer and the hard drive damage. I bought a new one and a new operating system. I took the old hard drive off and installed the new one. Then I inserted the CD that came with the hard drive. But nothing is happening. What should I do? Hard drive western digital and operating system windows xp. I tried installing it with the old hard drive, but every time I turns on the computer it turns off by itself and if I install it and turn on the computer its stays on. Thanks 
can't say i totally understand what u said there as the problem, dude, but sounds to me like your boot priority in cmos does not have cd listed. u need to go into setup (press delete key) just as the pc starts to go to setup, have cmos "autodetect" the newly installed HD, make the boot priority of the HD configuration HD 1st, CD 2nd, save and exit.
it will check the hd on restart, find nothing, check the cd, boot to your install disk
(which needs to be in the tray before you restarted), and do the deed
