My OS is Win7 Profesional. My PC is self built. The other night we had a power outage while I was working, on a program, on my PC. It only lasted for a second or two. When my PC came back on, it came back up to where I was working as if nothing happened. Last night, I don't shut off my PC over night, while working on the PC, I keep hearing a slight sound coming from the PC and each time I heard it, I would see the HDD light flicker on. I decided to reboot the PC to see if the sound would go away. The PC would not boot up. Figuring the OS was corrupted, I went about putting my legal version of Win7 in the DVD drive to run a repair. When I went to use the repair program, I got a message saying, This version of system recovery options is not compatible with the version of windows you are trying to repair. Try using a recovery disk that is compatible with this version of windows. Had me stumped until I remember that I had a second drive with WinXP on it that I was going to run under Win7 and somehow the PC was using WinXP, if that is possible. Checked the BIOS and did not find my C drive. I am thinking that the power outage, when the power came back on, compromised my C drive. After doing everything I know to do to recover my data, I have come up blank. I need to know if there is anyway possible to retrieve my data, etc?