Introduction
If you would like to upgrade your RAM or if your RAM has malfunctioned, you should pull the chip out and replace it with the desired chip.
Tools
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            Unscrew the four Phillips #1 screws holding down the back panel. Then remove one 5.8mm Phillips #1 screw labeled "M" in the middle of the back panel. 
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            Four 3.9mm Phillips #1 screws 
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            One 5.8mm Phillips #1 screw 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.