Sorry this has spiraled downhill for you...
Now you have 2 OS's. Did you use your factory disks? Do you have the opportunity to select which OS on startup? Do you see a new HDD (OS partition) in your 'my computer'....
You may choose to delete your old OS (assuming you answered yes to either of my last two questions), rename the new OS partition to C: and start afresh. Assuming also you used your factory discs, or you will have to download your specific drivers for your machine. This is not a big deal though.
Might lose some settings/program files but this trouble will vanish. (assuming it's not a hardware issue, probably not)
PS: you will have to use something like Parted Magic to do this.
PPS: Make sure you have copied out your docs from C:\users\yourusername\my documents and anything else you might have hanging around on your desktop etc.
Edited by TsVk!, 08 November 2013 - 07:58 PM.