User manual

Message Possible cause Remedy
No boot device available -
strike 7 to retry boot
Drive A: hard disk or diskette
defect
Reboot. If still not possible
replace defective part
Keyboard controller failure Failure of firmware of the
keyboard controller
Change the keyboard
controller
Keyboard stuck key failure One or more keys stuck Try to press the key(s) again
Memory address line failure
at hex-value, read hex-value,
expecting hex-value
Failure of memory chips
connected to circuit
Change memory chips
Memory data line failure at
hex-value, read hex-value,
expecting hex-value
Failure of a memory chip or
circuit
Replace the memory chip
Memory high address line
failure at hex-value, read
hex-value, expecting
hex-value
Failure of memory chips
connected to circuit
Replace the memory chip
Memory double word logic
failure at hex-value, read
hex-value, expecting
hex-value
Memory chip circuit failure Replace the memory chip
Memory odd/even logic
failure at hex-value, read
hex-value, expecting
hex-value
Failure of memory chips
connected to circuit
Replace the memory chip
Memory parity failure at
hex-value, read hex-value,
expecting hex-value
Failure of one of the parity
memory chips
Replace the memory chip
Error messages
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