Microsoft has moved to requiring signed drivers ever since the x64 versions of Windows have come out. All 64bit installs only run signed drivers. Yes, it's tur

Microsoft has moved to requiring signed drivers ever since the x64 versions of Windows have come out. All 64bit installs only run signed drivers. Yes, it's turnoffable, but only as a temporary measure and with huge warnings - kinda similar to what Apple does now too (boot parameter, but no warnings AFAIK)