Introduction
You can follow these steps to replace the sound card in your Dell Vostro V13. Be sure to power down, unplug and also back-up your laptop in order to prevent injury and loss of data.
Tools
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            Flip the laptop over so the vents are facing you. 
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            Remove the six 5.0 mm Phillips #1 screws using the magnetic driver. 
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            Remove the two 5.0 mm Phillips #1 screws on the back side of the laptop. 
 
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            Slide the plastic opening tool around the perimeter of the laptop until the cover pops off. 
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            Pull the back cover off. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.