Reference Guide
C-5
Writer: Holly Jahangiri Saved by: ACastle Saved date: 07/24/97 4:38 PM
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Power-On Self-Test Messages
Continued
Message Beeps* Probable Cause Recommended Action
1800-Temperature
Alert
None Internal temperature exceeds
specification.
Check that computer air vents are not
blocked and cooling fan is running.
Invalid Electronic
Serial Number
None Electronic serial number has
become corrupted.
Run Computer Setup.
Audible 2S Power-on successful. None.
Failsafe Boot Block
ROM
1L, 3S System ROM is bad; system
is running in Failsafe Boot
Block mode
Reflash the ROM using a ROMPaq
diskette. Refer to the Failsafe Boot
Block ROM section of Chapter 3, "Using
Compaq Software," for more
information.
* L = Long, S = Short
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