Windows 7 - Windows 7 doesn't recognize my hard drive

Hello!

I bought a new laptop, HP EliteBook 8540w with Windows 7 pre-installed. The system installed fine, but I also needed Fedora for work. I installed Fedora 13 and it went fine and installed correctly. However, after this I couldn't get Windows to startup any longer.

The system crashed on the screen with the four lights forming the Windows logo, briefly showing the blue screen and some error message and then restarting automatically.

I tried repairing Windows, but neither the installer nor the repair tool could show my hard disk and the partitions on it. I went to command prompt and ran diskpart tool, then typed:
select disk 0 [Enter]
list volume [Enter]
The only volume that was listed was my DVD (select disk 1 reported that there is no such disk).

I've tried changing BIOS SATA settings to all of the options (AHCI, IDE and RAID), but to no avail. I've also downloaded the newest drivers both for my Intel chipset and SATA, loaded them in setup, but the setup only popped up a message box saying that the drivers can't be installed (I've checked the checkbox that filters out drivers incompatible with my hardware).

I've attempted to reinstall Windows completely, but as you can see from the photo, I had no drives to install to. Later on I deleted the Windows partitions using the Fedora 13 installation (which still boots correctly), but nothing changed. I tried running 'bootsect /nt60 SYS /mbr' in command prompt also, but all that did was mess up my MBR and then even Fedora didn't start. (I've repaired that with Fedora install disc.)

Any ideas what's going on and how I can make Windows recognize the hard disk?

Thanks,
Nikola