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into the socket, you may have inserted it incorrectly. Turn the DDR DIMM around and try to insert it again.
To reconfigure your computer
Your computer automatically detects the amount of memory installed. Run the BIOS utility to view the new value for total system memory and make a note of it.
Replacing the hard disk
Follow these steps to replace your computer’s hard disk:
1Remove the side panel (see page 56).
2Remove the four screws that hold the hard disk to the disk frame. Set the screws aside.