Einleitung
This is a guide that will help you when it comes to replacing the RAM on a Dell Alienware 15 R3 laptop.
Before beginning this repair, turn off the laptop and unplug it from the charging cord.
Werkzeuge
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            Flip the laptop over so that the backside is facing up. 
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            Use a Phillips #00 screwdriver to remove the six 13.0 mm screws from the sides of the back case. 
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            Use a Phillips #00 screwdriver to remove one 5.0 mm screw from the back of the laptop. 
 
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            Use the opening tool to pry the back case from the computer. 
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            Use the opening tool and work your way around the perimeter of the back case to gently release the clips. 
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            Lift the back case off of the laptop. 
 
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            To remove the old RAM sticks, push the metal arms out to the side, using an opening tool or your fingers. 
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            Slide the RAM stick out at a 45 degree angle. 
 
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To reassemble your device, follow these instructions in reverse order.