[!!SOLVED!!] Wifi Card Not Detecting [ Compaq Presario CQ40 ]

[Piashi Mon]

Laptop Brand: Compaq Presario CQ40
Linux Distro:  BackBox 4.2 [ 64 Bit ]
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Issue: Wifi Button remains Yellow. It doesnt turn to Green even after pressing. As because it doesnt turn to green therefore Wifi is not working. Could you give me a step by step solution, will be highly appreciated. Thank you.

[Piashi Mon]

This Issue is Solved !!!

Step 1 : I Found out the particular Hardware device by executing this following command in Terminal

            lspci -vnn | grep 14e4

Step 2 : Then, I check The Driver Table by visiting this site : http://linuxwireless.org/en/users/Drivers/b43/

Step 3 : Now, I execute The Following Command In Terminal

            sudo apt-get install firmware-b43-lpphy-installer

Once All Done, I restarted PC

Now, its working like a Charm :)

NOTE: After Step 3, If this Following Error Pops Up

         An unsupported BCM4312 Low-Power (LP-PHY) device was found

Then this following Command will be executed in Terminal

         sudo apt-get install firmware-b43-lpphy-installer

Now, Again Perform The Step 3 & It should be OK :)