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MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGE PRODUCT DESCRIPTION LEGAL NOTICE HOW TO USE THIS GUIDE
REMOVAL & REPLACEMENT ILLUSTRATED PARTS CATALOG TROUBLESHOOTING SPECIFICATIONS
Troubleshooting
Power-on Self Test (POST)
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Compaq
The Power-On Self-Test (POST) is a series of tests that run every time
the computer is turned on. POST verifies that the system is
configured and functioning properly.
To run POST, complete the following steps:
Complete the Preliminary steps.1.
Turn on the computer.2.
If POST does not detect any errors, the computer beeps once or twice to
indicate that POST has run successfully. The computer boots from the hard
drive or from a bootable diskette if one is installed in the diskette drive.
POST Error Messages
If the system is not functioning well enough to run POST, or if the display is
not functioning well enough to show POST error messages, refer to the
Troubleshooting tables in the Troubleshooting without Diagnostics page.
If POST detects an error, one of the following events occurs:
A message with the prefix "WARNING" appears, informing you where
the error occurred. The system pauses until you press F1.
1.
A message with the prefix "FATAL" appears, informing you where the
error occurred. After the message, the system emits a series of beeps,
then stops.
2.
Warning Messages
Warning messages indicate that a potential problem, such as a system
configuration error, exists. When F1 is pressed, the system should resume.
You should be able to correct problems that produce warning messages.
If you receive one of the error messages listed below, follow the
recommended action.
Warning
Messages
Message
Description
Recommended Action
CMOS checksum
invalid, run SCU
CMOS
RAM information
has been
corrupted.
Run Computer Setup to reinitialize
CMOS-RAM.