I was in the process of installing Windows 7 on my HTPC. When I installed it, I told it not to enter a product key at this time. I installed the Win7 Cat video/chipset drivers, rebooted, all was well. I installed the realtek network card drivers (no need to reboot), then I installed the Realtek HD audio drivers, which prompted for a reboot. When it booted back up, I was greeted with a black screen, asking me to activate now. I thought Windows 7 gave you a grace/trial period of 30 days to activate? Has MS changed this? Did my OS "phone home" once the NIC drivers were installed? Seems strange to me, and very suspicious, since Windows 8 just came out. Edit: I like to install all of the updates, and get the system just how I want it, before I "burn" a license key to activate Windows.