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Message Possible Cause
No boot sector on fixed disk - press Fl to retry boot (or
may also say, press Fl to retry boot, F2 for SETUP
utility)
The C: drive is not formatted or is not bootable.
Not a boot diskette - press Fl to retry boot (or may also
say, press Fl to retry boot, F2 for SETUP utility)
The diskette in drive A: is not formatted as a bootable
diskette.
No timer tick interrupt The timer chip has failed.
xxxxxh Option ROM checksum failure where xxxxxh is
the starting address of the option ROM
The peripheral card contains a defective ROM.
Shutdown failure Either the keyboard controller is not accepting the
reset command or the associated reset logic has
failed.
Time of day not set - run SETUP program Clock not set.
Timer 2 failure The timer chip has failed.
F2 to enter ROM-based SETUP Invalid configuration information must be changed.
Invalid configuration information - please run SET'UP Display adapter is configured incorrectly. Memory size
is incorrect. Wrong number of diskette drives. Other
configuration errors.
Keyboard clock line failure The keyboard, the keyboard cable connection, or the
keyboard controller is defective.
Keyboard data line failure- The keyboard controller firmware has failed.
Keyboard controller failure The keyboard controller firmware has failed.
Keyboard stuck key failure A key is jammed.
Memory failure at hex-value, read hex-value, expecting
hex-value
Circuitry associated with the memory chips has failed.
Unexpected interrupt in protected mode Hardware interrupt or NMI occurred while in protected
mode.
Real time clock failure The RTC or battery failed.
Message Possible Cause
nnnk Base Memory The amount of base memory that tested successfully.
nnnk Extended The amount of extended memory that tested
successfully.
40