Vista won't boot, not even in safe mode or recovery

Hi,

I have a Sony Vaio  laptop which had become severely infected with adware/spyware viruses. After being being unsuccessful in removing all of the viruses I decided to reload vista.

After backing up the relevant data. I reset the laptop with the Vaio recovery disk in the disk drive. The recovery console failed to load. The green status bar just kept swiping across the screen.

Next I took the disk out and let windows load and opened the Vaio recovery tool. I clicked 'restore my pc back to factory settings' and the software began to initialize it then proceeded to shut down windows. As this was happening I was confronted with the blue screen and windows crashed.

The laptop reset itself and began to load the Vaio recovery tool (just as when using the recovery disk) and again after two hours of waiting the green status bar was still going back and forth.

I reset the computer and tried F8 and using safe mode. However safe mode fails in initialize and hangs with the last driver: disk.sys

I have tried all of these things repeatedly and tried with another Vista recovery disk (even though I know the other one works because I recovered this laptop not so long ago with it) with no luck

Any help is greatly appreciated.

Cheers

Rohit