How can I get my computer to boot?

Alienware Aurora 7500: AMD Athlon 64 X2 5200+, 3GB DDR2-800, 250GB+320GB HDD's, 512MB Nvidia GeForce 8800GT, nForce 590 SLI (AMD)

I tried to fix my Windows XP installation on my 320GB Hard Drive, but instead I just deleted the partition, and wanted to run a system restore to factory conditions, but when I boot from the system restore disk it finds an error before it can start. It came with a Vista support disk (for the vista partition on the 250GB HDD) but when I try to repair the Vista installation it finds an error and cannot repair. Should I send the computer back to Alienware, or is there a way to fix this. I just want to get it to boot up in vista.

How can I get my computer to boot?norton internet security

What is the exact error code?

If it's an Unmountable boot drive then it's generally a problem in the zero sector of the hard drives caused by a virus corrupting key files, or the disks actually suffering physical damage.

Either way a replacement HDD is your only true fix if that is the problem. if that isn't the problem, run a Full Reformat on Both Hard rives and Reinstall both OS's. You may also have a corrupted BIOS extension that is screwing around with the boot procedures. In that Case I would suggest booting the computer to Command prompt only and resetting the BIOS settings to their respective defaults.