I have recently (After yesterday's Windows Update) gotten a weird problem
As I log in normally to my computer, the Network Sharing Center doesnt respond, nor does the icon down in the taskbar. I have tried the solutions you can find by googling to fix this - none helped.
That is not everything, every application that wants to use internet connection freezes as they try to do so.
I got it fixed temporarily by using the System Restore to restore the system to the point before the Windows Updates were applied, but that is not an option anymore, because the restore point is no longer there.
Windows does not let me uninstall updates in Safe Mode, and as Windows Update accesses internet to do so - it too freezes during a normal login.