I have an Inspiron 5010 with Windows 7 Home Premium. Got it for my birthday last month. Pretty decent laptop, but there’s one problem. Every time Windows installs an update, the built-in bluetooth disappears. This has happened before. The first time was a couple weeks ago, the Bluetooth wasn’t working. I checked, and it wasn’t in the system tray any more. I found the program, C:\Program Files\WIDCOMM\Bluetooth Software\Btttray.exe, tried to run it, and nothing happened. I used Dell’s live chat to figure it out, the guy ended up reinstalling the drivers, and it worked fine. Now it’s happened again, but reinstalling the drivers didn’t help. I used Dell’s chat thing again, but this time the guy had no idea what he was doing, and uninstalled the drivers completely, along with the program in C:\Program Files\WIDCOMM\Bluetooth Software\. Then when he tried to reinstall them, we got the message “activate Bluetooth device using wireless switch.” Switched the wireless off and on, and it did nothing. He then told me to turn off the computer, take the battery out, hold down the power button for 40 seconds, then put it back together, turn it on, and see if that helped. He said he’d have someone call back in an hour. It didn’t help, I tried reinstalling the stuff myself and it didn’t work. They called back two and a half hours later, didn’t listen to anything I had to say, and told me to wipe the computer clean and reinstall everything. I’d rather not do this right now, and I’m pretty sure this can be fixed without doing it. Since then, I HAVE checked BIOS, and it does recognize the built in bluetooth. It’s not a problem with the hardware, it’s definitely software. I’ve tried reinstalling the drivers and the bttray stuff again, and the drivers (this and this ) still give me the “activate bluetooth using wireless switch” message, and the other program (here) gets stuck at the very beginning, saying “please plug in or turn on your Bluetooth device.” So basically Windows 7 isn’t recognizing the laptop’s built in Bluetooth any more, and I can’t figure out how to fix it. Can someone please help me with this?