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HP Probook 4540s BIOS Chip Replacement

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Disconnect the 2 WLAN coaxial antenna cables from the terminals on the WLAN module by carefully prying up the connectors using your spudger or your hands

Remove the two 3.0 mm Phillips PM2.0×3.0 screws that secure the WLAN module.

Remove the WLAN module by pulling away to the right.

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