Windows Drive Full But Can't Find Any Files On The Drive?

Recently my wife caught a virus on her computer (HP touchsmart windows 7 home premium). Your typical virus program that sends hundreds of pop up screens and says click this for full removal, blah blah blah. Anyways I used malwarebytes to see if the program could be removed, malwarebytes found 5 problems and I removed them. Afterward I noticed that there were no icons on the screen, I tried to bring up task manager and the computer rebooted. once the computer rebooted, there was a black screen with "no operating system found".

I tried the "repair your computer" option on the Windows 7 disk, but it was not able to repair the problem automatically, I also tried some manual command scan prompts that I found on the net. None of this has worked so far.

I figured that I would take the hdd out of her computer and dock it to another computer. The hard drive connected fine, but when I tried to open it there was nothing in there. I tried to make sure that all files were not hidden (they weren't). Funny thing is when I click on properties for the drive it shows that the drive is 2/3rds full but I can't see any files or information when I try to search the drive. I also just tried copying the hard drive to another harddrive and it was copying files but once I opened the new location, it was still empty (even thought the folder said in properties 84 gigs).

Is there something that I am missing, I would like to retrieve all of her documents, pictures etc. then I could reformat that drive and re-install windows if I can not get it to boot back up correctly.