| + | [* black] ***Step 1. Open the computer protective case.*** |
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| + | [* black] First power off the laptop and turn the back of the computer up and you will find there are 11 screws. |
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| + | [* black] Use a screwdriver to unscrew the screws on the back of the computer and open the back of the computer. Because the back shell of the Dell computer has a lock design, the three screws below cannot be unscrewed, as long as the screws are screwed to the maximum and slip with some sliding sound. |
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| + | [* black] In addition, opening the back cover of the computer can be a bit laborious. You can use a hard object to pry it through the gap or force it from the air vent. |
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