Do the reinstall again, make sure you delete all partitions and create them again to your specific sizes during the windows installation. Also make sure that you do a full format of your primary partition and not just a quick format, you want to make sure no bugs are hiding in your boot sector and not being formated with the rest of the data.
if this does not work and you still get the same error there are bootable programs that you can download to test your PCs components, it may be that the hard drive has failed during the installation and cannot access the data correctly.
Teris
April 2010