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Troubleshooting Help Zone
CMOS Test Error
Problem Possible cause To try and fix this ...
POST displays a CMOS test
error. CMOS is a chip that
keeps a record of installed
components when the PC is
turned off.
The internal battery is not
working.
1 Set the PC to the correct time (refer to the operating
system manual).
2 Switch off and unplug the PC for an hour.
3 Restart the PC and check the time is correct.
4 If the time is incorrect, replace the PC’s battery by a new
one (refer to page 62).
You may need to update
your PC’s Basic Input
Output System (BIOS).
Create a floppy to update your PC’s BIOS. Refer to page 20.
More Advanced Troubleshooting
Power is not correctly
connected to the system
board.
1 Disconnect the power cord.
2 Remove the PC’s cover (refer to page 44).
3 Check the power connector is correctly attached to the
system board.
4 Close the PC, reconnect the power cord and check that
the PC boots (starts).
You may need to restore
the default configuration
settings
1 Switch the PC OFF then ON.
2 When the message
Press F2 to Enter Setup
appears,
press the
F2
key.
3 Press
F9
to restore default values.
4 Press
F10
to exit the Setup program saving changes.
The CMOS is corrupted Clear your PC’s CMOS manually. Refer to page 77
The system board is not
working.
1 Disconnect the power cord.
2 Remove the PC’s cover (refer to page 44).
3 Replace the system board by a known working board
from the same model of PC (refer to page 46).
4 Close the PC, reconnect the power cord and check that
the PC works.
If the problem persists, contact your authorized support provider
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