Introduction
There are many reasons to replace your hard drive. You may be running out of storage space or want to upgrade to a solid state drive. Perhaps you are encountering errors with your data. This guide will get you fixed up in no time.
Tools
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            Power down the laptop prior to beginning. 
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            Turn the laptop over with the battery closest to your body. 
 
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            Insert the pointed end of a spudger into the battery release. 
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            Slide the release gently all the way to the left. 
 
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            Place your hands on each end of the battery. 
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            Pull the battery towards your body to remove it. 
 
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            Using a #0 Phillips screwdriver, remove a total of eighteen identical 8mm Phillips screws and set them aside. 
 
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            Rotate the laptop 180 degrees so that the battery compartment is now furthest away from your body. 
 
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            Put your fingers under the top of the keyboard assembly directly below the Acer logo. 
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            Carefully pull up on the center until you hear the tabs disengage from the bottom. 
 
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            Work your way around the seam with the plastic opening tool carefully prying the base and top cover apart. 
 
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            When the two halves are separated, carefully lift up the front of the keyboard and touchpad assembly. 
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            You will see three ribbon cables attached to the motherboard. 
 
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            Closest to the ribbon cable on the zero insertion force (ZIF) connector is a white locking tab. 
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            Carefully lift up on the locking tab with the plastic opening tool to release the ribbon cable. (Picture 2) 
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            Remove the ribbon cable from the connector. 
 
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            Closest to the ribbon cable on the ZIF connector is a black locking tab. 
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            Carefully lift up on the locking tab with the plastic opening tool to release the ribbon cable. (Picture 2) 
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            Remove the ribbon cable from the connector. 
 
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            On each side of the large connector there are two white tabs. 
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            Carefully push away from you with the plastic opening tool on each white tab to release the cable. (Picture 2) 
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            Remove the ribbon cable from the connector. 
 
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            Once all three ribbon cables are disconnected, lift off the top cover with the keyboard and touchpad. 
 
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            Locate the hard drive and its carriage at the lower right corner of the laptop. 
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            Release the USB port ribbon cable by using the plastic opening tool to carefully lift up the black locking tab of the ZIF connector. 
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            Move the USB port ribbon cable to the side. 
 
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            Use a Phillips #0 screwdriver to remove the two 4 mm screws securing the hard drive carriage in place. 
 
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            Hold the right side of the laptop in place with your right hand. 
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            Put the fingers of your left hand along the top edge of the hard drive carriage. 
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            Push the hard drive carriage towards your right hand to disconnect it from the motherboard. 
 
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            Hold the hard drive carriage with your non-dominant hand along one side. Ensure one of the Phillips screws is visible. 
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            Using a Phillips #0 screwdriver, remove the 3 mm screw to release the side of the hard drive from the carriage. 
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            Repeat the previous bullet to remove the second 3 mm Phillips #0 screw. 
 
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To reassemble your device, follow these instructions in reverse order.