Power-on self-test (POST)
When you turn on the computer, the Power On Self-Test (POST) performs a series
of tests to check the operation of system components and some of the installed
options.
If POST finishes without detecting any problems, the first window of your operating
system or application program appears.
Notes:
1. If you have a user password set, you must type the password and press Enter,
when prompted, before the operating system will load.
2. A single problem might cause several error messages. When this occurs, work
to correct the cause of the first error message. After you correct the cause of
the first error message, the other error messages usually will resolve the next
time you run the test.
The possible types of beep codes are as follows:
Repeating long beeps
Indicate a memory error. Ensure that all DIMMs are correctly installed.
One long beep and two short beeps
Indicate a video error. The BIOS cannot initialize the video screen to display
any additional information. Ensure that the video adapter is correctly
installed.
Small computer system interface (SCSI) messages (some models)
If your computer has an Ultra160 SCSI adapter installed and you receive a SCSI
error message when running the SCSISelect Utility program, one or more of the
following might be causing the problem:
v
A failing SCSI device (adapter or drive)
v
An improper SCSI configuration
v
Duplicate SCSI IDs in the same SCSI chain
v
An improperly installed SCSI terminator
v
A defective SCSI terminator
v
An improperly installed cable
v
A defective cable
To solve the problem, verify that:
v
The external SCSI devices are turned on. External SCSI devices must be turned
on
before
the computer.
v
The cables for all external SCSI devices are connected correctly.
v
The last device in each SCSI chain is terminated properly.
v
The SCSI devices are configured correctly.
If you have verified these items and the problem persists, run the diagnostic
programs to obtain additional information about the failing device. If the error
remains or recurs, call for service.
Note:
If your system does not have a SCSI hard disk drive, ignore any message
that indicates that the BIOS is not installed.
Chapter 6. Solving problems
85
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