What should I do if Windows operating conditions become unstable?

• Close all running software applications, and then reboot your VAIO computer.
  If you cannot reboot your VAIO computer, press and hold down the power button on your VAIO computer for more than four seconds to turn it off. When your VAIO computer is turned off, the power indicator is off. If the power indicator of your VAIO computer blinks orange while rebooting (from sleep mode), release the power button then press and hold it down for more than four seconds again to turn it off. Take note that this procedure may render created or edited files unusable.