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Introduction

This guide will show you how to replace the Wi-Fi/Bluetooth card in the HP ProBook 455 G7 (Model: 7JN02AV). The Wi-Fi card enables wireless internet and Bluetooth functionality.

A replacement may be needed if your device experiences frequent disconnects, no Wi-Fi networks appearing, Bluetooth malfunction, or if the “Wireless Connectivity Issues” section of the Troubleshooting Page matches your symptoms.

Before beginning, power off the laptop and disconnect the battery.

The Wi-Fi card has delicate antenna cables—detach them gently to avoid damaging the connectors.

What you need

Step 1 Lower Case

HP ProBook 455 G7 Wi-Fi Card Replacement, Lower Case: step 1, image 1 of 1

Before beginning, completely power off the laptop and unplug the charger and any peripheries.
Flip the laptop over so the lower case is facing up.
Use a Phillips #1 screwdriver to remove the seven 8 mm-long screws securing the lower case.

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Step 2

HP ProBook 455 G7 Wi-Fi Card Replacement: step 2, image 3 of 3

Insert an opening tool into the seam between the lower case and chassis.
Pry around the entire perimeter until the lower case fully releases.
Lift and remove the lower case.

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Step 3 Battery

HP ProBook 455 G7 Wi-Fi Card Replacement, Battery: step 3, image 1 of 3

HP ProBook 455 G7 Wi-Fi Card Replacement, Battery: step 3, image 2 of 3

HP ProBook 455 G7 Wi-Fi Card Replacement, Battery: step 3, image 3 of 3

Use a Phillips #1 screwdriver to remove the three 4 mm-long screws securing the battery.
Carefully lift the battery and remove it from the laptop.

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Step 4 Wi-Fi Card

HP ProBook 455 G7 Wi-Fi Card Replacement, Wi-Fi Card: step 4, image 1 of 1

The Wi-Fi card is a small rectangular module secured with one screw.

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Step 5

Use the tip of a spudger to pry up and disconnect the two antenna wires (black and white) attached to the Wi-Fi card.
Note their original positions (usually labeled MAIN and AUX).

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Step 6

Unscrew the single Phillips screw holding the card in place.
The card will pop up at a slight angle.
Gently pull the Wi-Fi card out of its socket.

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Conclusion

Your Wi-Fi card replacement is complete. After booting, confirm that your wireless networks appear and that your internet connection is functioning normally.