I've tried installing this many times. I've followed the advice to uninstall things, rename files to .old, reboot, eliminate hidden files, revive drivers, etc. Many times. I could install it via DVD on my wife's old crappy HP laptop (with no antivirus, using the DVD), but not on my newer Acer (with Norton 360, turned off). Lots of time spent, both by me, and the folks trying to help.