Windows 8.1 with classic shell is all anyone needs to make windows 8.1 98% like windows 7. I got windows 8.1 running on laptops from 2005-2006. Runs great. Disable driver signature if your installing legacy hardware. If 7 worked on your hardware then 8.1 will work just fine also. Got it running 64bit on turionX2 laptop. Single core turion64 though had to run 32 bit since the bios of the laptop didn't support one of the cpu features. 32 bit version runs great still. Runs smoother than 7 and 8.0 even. Memory management improvements make a difference when your running 2-4GB of ram. Could open more windows without lag with 8.1 on older hardware than on 7. All my laptops are on 8.1 now with classic shell. Not missing 7 at all. Smoother experience in 8.1 in general.