5.Turn on the system. If the power LED does not light, see “Power Light Does Not Light” on page 125
6.If errors are encountered, power off the system and remove all
Monitoring POST
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 “Diskette Drive Activity Light Does Not Light” on page 126.
If a second diskette drive is installed, does its activity light turn on briefly? If not, see “Diskette Drive Activity Light Does Not Light” on page 126.
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 “Initial System
Specific Problems and Corrective Actions
This section provides possible solutions for these specific problems:
•Power light does not light.
•There is no beep or an incorrect beep pattern.
•No characters appear on screen.
•Characters on the screen appear distorted or incorrect.
•System cooling fans do not rotate.
•Diskette drive activity light does not light.
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•There are problems with application software.
•The bootable
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