Pretty much to do anything with windows repairs you need the windows installation disk. Is this a custom built computer or a big box machine(dell, hp, compaq, toshiba)? BTW this is the general issue with using dynamic logical partitions in windows rather than creating hardware RAIDS, I have been here before. The fastest way to deal with this issue is to download a Hiren's rescue CD, get an external drive offload your mission crit docs(music,pics,saved games) and rebuild the machine. Thoughts?