Intel® Server System SR1680MV Service Guide 111
4. If the operating system normally loads from the hard disk drive, make sure there is
no other pluggable boot device.
5. Turn on the system. If the power LED does not light, see “Power Light Does Not
Light”.

Verifying Proper Operation of Key System Lights

As POST determines the system configuration, it tests for the presence of each mass
storage device installed in the system. As each device is checked, its activity light should
turn on briefly. Check for the following:
•Does the diskette drive activity light turn on briefly? If not, see “Cannot Connect to
a Server”.

Confirming Loading of the Operating System

Once the system boots up, the operating system prompt appears on the screen. The prompt
varies according to the operating system. If the operating system prompt does not appear,
see “No Characters Appear on Screen”.
Specific Problems and Corrective Actions
This section provides possible solutions for these specific problems:
•Power light does not light.
•No characters appear on screen.
•Characters on the screen appear distorted or incorrect.
•System cooling fans do not rotate.
Try the solutions below in the order given. If you cannot correct the problem, contact your
service representative or authorized dealer for help.

Power Light Does Not Light

Check the following:
•Did you press the power-on button?
•Is the system operating normally? If so, the power LED might be defective or the
cable from the control panel to the server board might be loose.
•Have you securely plugged the server AC power cord into the power supply?
•Remove all add-in cards and see if the system boots. If successful, add the cards
back in one at a time with a reboot between each addition.
•Make sure the memory DIMMs comply with the system requirements.