Dell Latitude E6400 WiFi Card Replacement

Simultaneously slide the battery latches (outlined by the red box) to the dock connector in the middle.

This will release the battery. Just slide the battery away from the computer.

Open up the computer and press and hold the power button for 5 seconds. This drains any power left inside the computer.

This is important, as if electricity remains in the notebook, it can shock you and damage the logic board.

Loosen the center screw with a philips screw driver. This is the only screw that needs to be loosened.

It can't be removed as it is captive the the bottom plate.

Now slide the plate away from the dock connector.

Use a plastic opening tool or a spudger to remove the antennas.

I use my fingers, but the picture shows and iPod opening tool because most adults have bigger fingers.

I'm 14, so my fingers are small enough.

remove the one and only philips screw securing the WiFi card in place.

The card should instantly pop to an angle less than 45 degrees once the screw is removed.

Now simply pull the card strait away from the slot.

Install a new card by sliding it in the direction of the arrow and pressing firmly down until it clicks.

Slide the bottom plate on.

Slide it to the rear of the notebook. (battery compartment)

Tighten the screw.

Do not over-tighten. Doing so will strip the screw.

Slide the battery in until it clicks.

Press the power button.

AND it works.