Okay, so here is a HP 6730b that was accidentally dropped. The cracks in the LCD are clearly visible on the left side of the image.

Shut down the computer. Disconnect all external devices connected to the computer. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.

Close the screen and turn the computer over. Remove the memory/WLAN module compartment cover by loosening the Phillips 2.0×5.0 "captive" screw. They are secured by a spring clip at the back, so they will not be easily removed. All that is required is to loosen those.

Disconnect the WLAN antenna cables from the terminals on the WLAN module. The black cable is connected to the WLAN module “Main” terminal. The white cable is connected to the WLAN module “Aux” terminal.