I just performed a System Restore without disks (as I have done in the past by pressing F10) halfway through the process the computer froze. I hit enter about 40 minutes later and it jumped to a screen that said "Restore successfully completed" i hit enter on the Finish tab for the computer to restart, but it froze again. after about 15 minutes I turned the computer off manually. The computer now says /Windows/system32/winload.exe is missing or corrupt. I can no longer access the restore screen and I was never given recovery discs when I bought the computer from the store. Can I use recovery CD's from another Hewlett Packard computer that runs off of Vista as well? I have the a1730n model and my sister has the a1700n model. Please help!!