What should I do if the workstation gets stuck in suspend mode and won't wake up?

Press any key on the keyboard or the power button to attempt to wake the workstation. If the system remains in suspend mode, shut it down by pressing and holding the power button for at least four seconds, then press the power button again to restart. If the system still does not shut down, unplug the power cord, wait a few seconds, plug it back in, and press the power button to start the workstation. (Page 37)