The touch lights on my Dell Studio XPS 1647 (running Windows 7) are broken. For most features: volume, playing and pausing media, this isn't an issue, I can do it another way. But for the wireless this is a huge problem: I can't find a way to turn it back on. The wireless says "Not connected: No connections are available." I know my wireless works (I'm using it in my Macbook right now) and there are many other wireless networks in my apartment building. Before, this would mean I needed to tap that touch light to turn it back on, but they don't work. Troubleshooting tells me I need to "use the switch to enable wireless capability on this computer." I've searched everywhere for another way to enable the wireless not using that touch light, but I can't find a thing! There has got to be a way. I've tried uninstalling and reinstalling the drivers for the wireless card, but no luck. I've also tried a variety of things to get the touch lights working again. I don't care how complicated it is--I just need to turn my wireless back on!
I believe that this thread will get you headed in the right direction. It appears that you can turn the button on/off, which means that the user must have the ability to turn the wireless on another way.