Introduction
This guide will describe how to replace the hard drive of the HP Pavilion dv7-4285dx
Tools
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Slide the battery release switch to the left. The battery pack will then subsequently release.
 
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Unscrew the 5 back plate screws using a Phillips #0 screwdriver.
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Remove back plate using a metal spudger.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.