Hard drive problem, current status(Auto-detecting SATA3 freezes bios)

Hi.
About a week ago while I was working on my computer, it suddenly hanged ( All programms didn't respond ).
I decided to restart it manually(not through windows, but by pressing a button on my computer).
From this moment Windows7 stopped loading...
I managed to load with Kubuntu live CD and it showed me, that my C: drive is marked as in use(or its NTFS is marked as in use). There were two suggestions: load Windows and properly shut down it, use something like force mount.
Well, first option, obviously, wasn't for me, so I made "force mount". After that Kubuntu started to show me: "NTFS is in inconsistent state" something like that. And I still had no access to my files on that drive.
I tried to load my Windows7 one more time, but with no success. One thing I have marked, that now Windows "loads/goes" a little bit further till Windows logo and stops there.
I tried to "repair" my C drive with Windows7 disk, but again with no success. I tried to run "chkdisk C: /f", but system printed out something like "No direct access to disk".
I decided to install Windows7 to another my hard drive(IDE, not SATA, previous drive, by the way, was SATA) and to try to access my files from that installed windows.
But another problem occured: now with my SATA drive connected, even BIOS hangs on message Auto-detected SATA3(my hard drive is connected to this port).
Any ideas, how I can safe my hard drive or at least files on it?
Any help would be highly appreciated!
P.S sorry for my english