New
#11
Windows 7 does NOT 'lock you out' of your system - except in some relatively minor respects.
Vista RTM did (SP2 does pretty much the same as Win7)
Win 7 will bring up a notification on every boot that the system is not genuine, and requires activation, and you can cancel out of that and get to a fully-functional desktop. However, if MSE is installed, it will also throw a fit, and after 30 days of non-genuine status, it will disable itself.