01-17-2012 04:50 PM
01-18-2012 03:58 AM - edited 01-18-2012 04:08 AM
Unplug. remove the battery,hold down power button ~15 seconds.
Remove and re-install both memory modules.
Make sure they are all the way in.
Make sure no label is caught in the slot.
Battery back in, re-plug.
See Removal/Replacement video for DIMM here: