The Windows 8x+ 64-bit problems (vJoy not installing) are due to Windows 8x+’s stupid requirement that drivers have to be SIGNED by M$ for $$$ to install on Windows. The only way to install vJoy on Windows 8x+ x64 (8, 8.1, 10, etc) is to DISABLE driver signing. Once you do this vJoy (and InfiniteScreen) should install without issue. http://www.howtogeek.com/167723/how-to-disable-driver-signature-verification-on-64-bit-windows-8.1-so-that-you-can-install-unsigned-drivers/