Acer TravelMate P243-MG User Manual page 77

Error messages
Keyboard interface
error
Memory size
mismatch
If you still encounter problems after going through the corrective measures, please
contact your dealer or an authorized service center for assistance.
Corrective action
Contact your dealer or an authorized service center.
Press <F2> (during POST) to enter the BIOS utility,
then press Exit in the BIOS utility to reboot.
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