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O
bserving the Boot Routine
After you perform an external visual inspection as described in the previous
section, you should boot the computer and, while the boot routine is running,
observe the computer for any indications of problems.
NOTE: Most of the steps in this procedure require observation of computer
functions and indications, some of which can occur simultaneously. It may be
necessary to reboot the computer several times in order to complete all of these
steps.
To observe problem indications during the boot routine, follow these steps:
1. Turn on all peripherals and the computer. If the computer is already on,
press <Ctrl
Alt
><
><
2. Check the power supply fan.
Does the fan run normally?
Yes. Proceed to step 3.
No. Troubleshoot the computer power supply.
3. Watch the Num Lock, Caps Lock, and Scroll Lock indicators on the
upper-right corner of the keyboard. After all three indicators flash
momentarily, the Num Lock indicator should light up and remain on.
Do these indicators flash on and off within approximately 10 seconds after
the boot routine starts?
Yes. Proceed to step 4.
No. Troubleshoot the computer power supply. If the troubleshooting pro-
cedure indicates that the computer power supply is operational, troubleshoot
the memory subsystem.
4. During the boot routine, observe the computer for any of the following:
•
Hard-disk drive access indicator — This indicator lights up in response
to data being transferred to or from the drive. If this indicator fails to
light up during the boot routine, troubleshoot the hard-disk drive
subsystem.
•
Beep codes — A beep code is a series of beeps that indicates an error
condition. If the computer emits a beep code, see Table 3-1.
•
System error messages — These messages can indicate problems or pro-
vide status information. If a system error message is displayed, see
Table 3-2.
If none of these indications is noted, proceed to the next section, "Server-
Based Diagnostics."
Del> to reboot the computer.
Basic Troubleshooting
2-3
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