Dell OptiPlex 390 (Mid 2011) - Manual (Page 81)

Error Message Description
Keyboard failure A cable or connector may be loose, or the
keyboard or keyboard/mouse controller
may be faulty.
Memory address line failure at address,
read value expecting value
A memory module may be faulty or
improperly seated. Reinstall the memory
modules and, if necessary, replace them.
Memory allocation error The software you are attempting to run is
conflicting with the operating system,
another program, or a utility.
Memory data line failure at address, read
value expecting value
A memory module may be faulty or
improperly seated. Reinstall the memory
modules and, if necessary, replace them.
Memory double word logic failure at
address, read value expecting value
A memory module may be faulty or
improperly seated. Reinstall the memory
modules and, if necessary, replace them.
Memory odd/even logic failure at address,
read value expecting value
A memory module may be faulty or
improperly seated. Reinstall the memory
modules and, if necessary, replace them
Memory write/read failure at address,
read value expecting value
A memory module may be faulty or
improperly seated. Reinstall the memory
modules and, if necessary, replace them.
Memory size in CMOS invalid The amount of memory recorded in the
computer configuration information does
not match the memory installed in the
computer.
Memory tests terminated by keystroke A keystroke interrupted the memory test.
No boot device available The computer cannot find the hard drive.
No boot sector on hard-disk drive The computer configuration information in
System Setup may be incorrect.
No timer tick interrupt A chip on the system board might be
malfunctioning.
Plug and play configuration error The computer encountered a problem
while trying to configure one or more
cards.
Read fault The operating system cannot read from
the hard drive, the computer could not find
81