After a Windows update, my brother's Gateway computer loads to the "Step 3 of 3: 0%" and reboots.

Safe Mode does not work.

I placed a Vista DVD in the drive, and re-booted. (Note, this is my Vista DVD, not the Recovery/System disc that would come with a computer. Gateway does not give you CD's anymore. I believe they store recovery on a partition, but that partition has been wiped out).

I chose "Repair Your Computer"

I get a dialog box, but no operating system is listed. I'm then prompted to "Load Drivers". What drivers am I supposed to be loading here and where from?

I placed a CD in the drive to "load drivers" but I don't see my DVD drive listed. All I saw where X:/Sources along with several Removable Media slots that were empty.

On another screen I tried Startup Repair, which didn't do anything.

I attempted to use System Restore - but it doesn't detect the hard drive.

I'm guessing that I'm missing some sort of SATA driver and that is why the hard disk is not being found.

Any ideas on this?