Try running Startup Repair x3 without marking Active since you can't run DISKPART for some reason.
If no installation shows to repair, try running bootrec.exe /fixmbr and bootrec.exe /fixboot exactly as each are typed from CMD line. Then see if it will Startup Repair.
Strange that you can access HD to copy out your pics but not to test it. You are booting Data Lifeguard, right?
Try using GWScan CD which is the best version of Data Lifeguard I've found.
http://support.gateway.com/support/d...2&uid=27543171
Unzips to c:cabs where you can browse from ImgBurn to burn ISO to CD at 4x speed
If it works to repair HD then run Disk Check afterwards.
Try also running
Disk Check from CMD line if repair doesn't work as it can fix the file system if that is the problem.