I had the same problem in Vista. Here you go buddy Is Powerprep software compatible with Windows Vista® or Windows 7®? Powerprep can run on Windows Vista® or Windows 7® 32-bit operating system in compatibility mode. It will not run on 64-bit Windows Vista or Windows 7. To run Powerprep in compatibility mode, perform the following steps: Click Windows Start button > All Programs > Powerprep program group. Right click the GRE Powerprep icon in the Powerprep program group to open Properties dialog box. Click on the Compatibility tab and under Privilege Level, check the box that reads "Run this program as an administrator." Click the Apply button. Click on Continue if "Access Denied" pop-up message appears and click Continue again in the User Account Control window.

kukur · Jun 6, 2010 5:59 AM

I know that running in compatibility mode but mine is 64 bit windows 7. The problem is i hav to reinstall windows 7 in 32 bit system configuration n i hav no any supporting CD to reinstall windows 7, thats why i m looking for that material which typically works on 64 bit system..............

lapid · Jun 6, 2010 10:41 AM