Dell Inspiron 14R WLAN Card Disabled

Hello,
I have a Dell Inspiron 14R running Windows 7 64 bit. I have had my PC from this past November; about 7 months.
I was using my PC, and suddenly, I started to experience wireless problems. I was unable to get onto the internet. Other devices on my wireless network are able to log on to our network, although that is irrelevant because my radio wasn't picking up anything at all, when it always had from that same location. The connection worked fine using an ethernet cable. After the problem occurred, my Targus Bluetooth mouse also stopped working.  This is what I have tried:
Going into Network and Sharing Center, disabling my network adapter, and then enabling it again. This usually does the trick. After doing it over 5 times, it never worked.
Doing a simple system restore. I attempted restoring 3 different times to an update within the last week, each of which failed (probably another issue altogether).
Re-installing my WLAN CARD Driver, and then restarting. This didn't solve the problem.
Checking the Device Manager. It reported that the wireless card was running properly.
Using the DW WLAN CARD Utility. It says under the Link Status tab, after Connection Status, Radio Disabled. I tried right-clicking the icon in my Notification Area, and then clicking Enable Radio. It then shows an alert saying "The WLAN card is still disabled. Use the wireless switch or hotkey to enable it." Pressing Fn + F2, which is also supposed to enable the radio, did nothing, with no action or sign whatsoever from Windows. I also tried running tests under the Diagnostics tab. All hardware tests passed, with the Connection test giving me this alert again: "The WLAN card is still disabled. Use the wireless switch or hotkey to enable it," and then failing. The same thing happened when running the CCX Client diagnostics.
What should I do? The problem is obvious that my card is disabled, as all signs point to that. Does anyone have any ideas on how I could fix it? I've tried everything I know, not to mention countless Google searches.
Thanks!

I am experiencing the same issue with my Inspiron N4010. The network card has disappeared from the system devices. After a reboot, the network connected for about 15 seconds and then went away. I had the system devices displayed at the same time and the network card also disappeared when the network went down. The card worked fine until today. What is the cheapest route to fix this?
Also note the sound has come and gone over the past year. It is not working at the moment. It would be nice to fix both, but will the cost be greater than buying a new laptop or tablet?
I can't say I will ever buy a Dell product again. These laptops seem to only last a year or two. Even my more expensive work laptop which is less than a year old has had its motherboard and hard drive replaced.

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