My Compaq Presario CQ50 Notebook PC can't connect now to wifi because the wireless network button located on the right of power button above the keyword won't turn on. It was working before. I know when it worked because the amber color of the button would change to blue upon pressing it. The button is amber when wireless network is off. And the button is blue when wireless network is on. Today, the button's color still changes to blue when I press it, but whenever I lift my finger the blue color would change back to amber. And I could see wireless networks appear when my finger remains pressing the button and it's blue. And upon lifting my finger and the blue light changes again to amber, all wireless networks would disappear. So it's just a matter of making that button hold the blue color. Is there a shortcut key to turn the wifi connectivity on Compaq Presario CQ50 Notebook PC? If none, can you please tell me what to do? Thank you so much in advance.