amismail 0 Posted November 5, 2009 Hello, I had a problem in the past when I tried to upgrade a GV system from a GV-650 to a GV-800. I uninstalled the GV-650 software and drivers and all gv related files from the computer, then reinstalled the GV-800 drivers along with the V8.3 software, but the new card was acting funny. Only channel one would work. The only way for me to fix the problem is that I had to reformat the HD. Now, I am in the same situation. Is there any other method than having to reformat the HD. Thanks, Sam Share this post Link to post Share on other sites
dvrtiger 0 Posted November 5, 2009 You have to delete all registry keys added by GV installation...manually or by means of some software, like Total uninstall or something like that Share this post Link to post Share on other sites
