I have a Toshiba Tecra R950 laptop with Windows 7 64 bit. Last night it seemed stuck on the installing updates screen while shutting down. I let it run all night and it is still stuck. So I decided to shut it off by holding down the power button. Normally, if I hold it down long enough it will turn off, but now all it does is go to sleep. When I power it back on it wakes up and is stuck on the installing updates screen. I unplugged the power and am waiting for the battery to die. Any other ideas on how I can force it to shut down faster?