I have ran into the strangest problem while completing a fresh install of Windows 7. I had previously had Vista ultimate 64bit installed but decided to install Windows 7. The first time I did the install I decided NOT to format the vista partition, but to rather just install over it. I was using Windows 7 for about a month when I decided to get rid of all the Windows.old files (vista install) and do a fresh format.
to start with all you had to do was open my computer -> check properties of C:\ -> click cleanup -> advanced -> and clean prior installs of old windows versions. (it is in the manual).
Power save mode: are you using a LAPTOP? If yes, make sure the AC Adapter is plugged in. (that is in the manual also.)
I have tried to format and do the install again
tried to format? exactly what do you mean I tried? what did you format to: fat16, fat32 or NTFS? what format command did you use.? what version of Win 7 are you trying to install?
fill in your complete system specs
. all the info you can give will really assist.