The operating system is the most important program running on a computer that is required in order to run other programs.
CAUTION: Do not attempt to service the system except as explained in the documentation. Only trained service technicians should remove the system cover to access any of the internal components. Refer to the documentation for your server for complete safety information before attempting to service your system.
Verify your platform power is active:
Software errors can often appear to be hardware malfunctions. If you are experiencing a problem that appears hardware related, be sure to consider the software issues described in Troubleshooting Software.
Troubleshooting the Operating System
Following are possible causes of problems with the operating system: