I recently did a clean reformat on my Gateway laptop that had shipped with Windows Vista x64, I upgraded it to Windows 7 x64. I have downloaded all driver updates, and all Windows updates up to and including Service Pack 1. When I try to open any viewer, whether it is Viewer 2 or a 3rd Party viewer such as Phoenix, It does the following: Detecting hardware... Initializing VSF... Opens up the window that SHOULD be the login screen, but the viewers lock up there. I have done everything I could think of or find online: Uninstalled and reinstalled the viewers Deleted the Secondlife Data from the Users folder and reboot - no luck Running the viewers as Administrator Installed: DirectX, Quicktime, all .Net Frameworks, C++ redistrubutable (I've seen programs need it) All Windows Updates are applied, as are all driver updates. I've never had a problem like this... The very same laptop ran SL fine, all viewers, with Windows Vista x64... If I HAVE to go back to Vista I will, but I really don't want to, Windows 7 is running much better on my machine. Anyone have any suggestions for anything else to try before I throw in the towel? -Viper EDITS: SP1 is the latest service pack available to Windows 7 64 bit. Windows XP got up to SP3. I tried the method described at http://www.geekblogger.org/2010/10/second-life-game-initializing-vfs-error.html with no sucess I've had a computer do the initializing VSF error, but this is different. It clears that part of the loading, but when the login UI box should pop up for me to enter my user name and login, it locks up at that point. ESET Smart Security is installed on the laptop, but it has never caused problems before. For testing I disabled the firewall and antivirus/malware parts of the security software and the login screen still freezes. EDITS 2: Uninstalled both SL Viewers, deleted the folders in userdata, and prefetch data, rebooted, reinstalled, same problem. Doesn't matter if it's viewer 2 or a 3rd party viewer :( Laptop has 3 gigs of DDR2 ram - I don't see that being an issue.