Options 3-19
SIMM Troubleshooting
If a fault occurs at power-on, verify that the reassembly was performed correctly. One beep
indicates that the computer has completed its power-on self-test. If intermittent beeping
occurs, turn off the computer and try again. If the beeping persists, see Section 4,
Troubleshooting and Repair.
Table Section 3-4 summarizes problems that may develop after installing SIMM upgrade
kits and lists in sequential order suggested corrective actions.
Table Section 3-4 SIMM Upgrade Problems and Solutions
Problem
Symptom
Solution
No power
Power lamp on computer
status panel will not light.
1
. Check that the power cord is plugged into the
AC connector on the computer. Check that
the other end of the cord is plugged into a
live properly grounded AC power outlet.
Operating
system does
not boot
An invalid configuration
message is displayed.
1
. Press
F2
to run Setup and view parameters.
Memory
malfunction
Total memory is not
recognized.
1
. Reseat SIMMs. SIMM sticks must be in
specified banks (see Table Section 3-4).
2
. Systematically swap SIMMs.
3
. Replace SIMMs.
4
. Replace system board.
Keyboard or
mouse
malfunction
Monitor has prompt, but
cannot input data.
1
. Check that the keyboard and mouse are
plugged in.