Introduction
Step by step guide showing how to replace the CPU fan. This should help prevent the computer from overheating and randomly shutting off.
Tools
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            Use either the spudger or your fingers to pinch the clips away from the RAM chip on either side of each chip. 
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            The chip should pop up. 
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            Slide the RAM memory chips out of the slots. 
 
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            Use the spudger, push the two tabs, located in the battery slot, through their slots to release the keyboard. 
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            Do this with the computer slightly open for ease. 
 
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            Open the laptop. 
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            Start top of the keyboard and use the opening tool to pop the remaining tabs around the keyboard loose. 
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            The keyboard can be flipped onto its face once removed. 
 
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            Use the spudger and slide the grey tabs on either side of the keyboard wires away from the white plastic. 
 
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            Use the spudger to pop the gray tab up and away from the far left wire strip. 
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            Disconnect the wire strip by pulling the blue tab loose. 
 
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            Use the spudger to pop the white tab up away from the wire strip located at the top left corner of the mouse pad. 
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            Disconnect the wire strip by pulling the blue tab. 
 
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            Close the laptop. 
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            Remove the remaining 18 6mm PH1 screws from the bottom cover of the laptop. 
 
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            Use the opening tool to separate the back of the laptop from the inside cover. 
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            Open the computer and remove the inside cover. 
 
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            Lift the HDD out of the base and use the opening tool to disconnect the HDD from the motherboard wire. 
 
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            Slide the optical disc drive out of the slot to disconnect it from the motherboard. 
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            Unscrew the main 3.5mm PH1 screw from the motherboard. 
 
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            Unscrew the 3.5mm PH1 screw from the Wireless Lan chip. 
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            Use the opening tool to pop both wires off of the Wireless Lan chip. 
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            Pull the Wirelss Lan Chip to remove it from the motherboard. 
 
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            Pull the tape covering the wires for the Wireless Lan chip up. 
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            Pull the black and white wires loose. 
 
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            Pull up the tape securing the optical wires to the motherboard. 
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            Disconnect the wire plug-in from the motherboard. 
 
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            Unscrew the 3.5mm PH1 screw securing the optical disk drive to motherboard connector. 
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            Pull the connector to disconnect it from the motherboard. 
 
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            Use the spudger to disconnect the remaining three wires from the motherboard. 
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            Once the wires are disconnected, the motherboard is completely disconnected from the laptop frame. 
 
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            On the side opposite the CPU fan screws, pull loose the tape securing the fan assembly to the motherboard. 
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            The CPU fan can now be separated from the motherboard. 
 
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To reassemble your device, follow these instructions in reverse order.