Wifi issue compaq v3000 notebook

Hello,
My WiFi on my compaq v3000 is no longer detected... I think the device has been damaged as this occured shortly after I dropped the computure... but everything else works just fine... i no longer get a blue light on the Wifgi switch only red..

can someone tell me if I can replac ethie myself ...as the notebook is not in waranty any longer..

Thanks

Lou