After the installation of SLED 11 SP2, during the initial startup, when it reached a green screen which displayed a line of text "SUSE Linux Enterprise Desktop 11 SP2", it paused for a couple of seconds, then tried to continue to the next screen, it was right there, the monitor went dark and displayed: Enter Power Save Mode, and the booting process haulted. The PC power was on and refused to be shutdown, until I press the power button for 10 seconds.

So why can the system complete the booting process.

Thanks to help.