Law

Recently my laptop bluetooth stopped pairing with my smart phone. When opening My Bluetooth from my laptop it gave me the error "The attached bluetooth dongle is not supported" though I don't use an external dongle of any sort. I tried reinstalling the drivers but that only changed the error to "Dongle is unplugged" and my phone can no longer find my laptop as a bluetooth device. Is there any way to restore my laptop's bluetooth so I can pair and send media from my phone via push? I'm not really tech savvy but I am worried it could be due to a virus.

I m having trouble relating AC and DC bridges to real life devices. So I want to know what are things someone might see in their daily life that uses these bridges for its main function. I think headphones and other sound devices but I would like a few more examples.

I am trying to connect a Nintendo New 3DS to my wifi network which is by default set at 802.11n and for the device to connect it must be 802.11g or b. I've read that most connections should allow you to freely change this mode but I have not been able to find that option on my wireless modem settings. Calling my ISP did not help either as they didn't really make it clear if it was possible or not. Is their a certain option that will change it and is maybe under a not so obvious name? I want to know if it is even possible and if so how. My modem is of the brand Huawei. Thanks in advance.