Where did you get the installer? Did you burn the DVD yourself? Start with the latest official ISO burned to DVD or written to stick with the tool in Steps 1/2 of
Clean Reinstall - Factory OEM Windows 7. You'll want to also follow those steps in tutorial to get a perfect install.
If fresh installer fails try wiping the HD with
Diskpart Clean Command from installer Command Line acccessing
DISKPART At PC Startup . Then close Command Box, click Install now, follow these steps to
Clean Install Windows 7 . Report back any error message and at what step it fails.