When I start up my computer it shows the IBM page press F1 for setup or F12 to boot
then it goes to a operating system not found press f1 to restart or continue boot sequence, but that message keeps repeating itself. So I restarted and tried booting from the hard drive, but that sends me to a screen that says ntldr missing press cntrl alt delete to restart and then goes back to that page. So then I have to hit F12 to boot from the cd rom drive which I put the windows xp cd in that came with the computer to try and boot from that and that will return me back to the operating system not found, press F-1 to continue boot sequence.