3, 4, 1.
3 - for the fact they made graphics drivers "important updates" and installed bad drivers from nVidia my GTX 560. nVidia has problems with drivers for their 5 and 6 series cards, and I can't believe Windows isn't asking instead of installing.
4 - for continuing to re-install said drivers after I removed them and installed the latest drivers I can use without errors. It also installed the nVidia "update service" and "3d Vision", neither are necessary or wanted.
1 - Lowest score I could give need a Back to 7 option, the same problems still plague the OS, it's still a last ditch effort to solve a Microsoft problem and not a customer problem. Microsoft wants the "same experience across all devices" but no one uses them the same do they? I don't want my desktop with a 27" monitor to act like my tablet or phone, or the other way around. The "start button" should just open the Store since that's it only real purpose now.