I have DELL 1705 WiFi + Bluetooth card. Suddenly I can't connect to any wire or wireless connection to internet while bluetooth works fine and only way I can connect to internet is by using my phone as modem with USB tethering option. If I launch full diagnostics in dell.com webpage with DELL System Detect, it passes all tests.
I've already checked - my airplane mode is off and wi-fi adapter is enabled. I also updated all drivers.
What does the computer do when you try to connect? Have you check the hardware manager to see if there is any issues with the hardware such as conflicts or anything like that?
If you mean device manager, then it shows no problem at all. When I plug in RJ-45 nothing happens. When I try wireless, it shows it's disabled (I guess, cuz of red cross) so it doesn't show any connections. Also checked physical adapter by placing it in another computer - it works there.
I like to suggest you uninstall /reinstall Dell 1705 Wifi + Bluetooth driver. In device manager, right click the driver and then click on uninstall. On the Device Manager taskbar, click on Action, and then Scan For Hardware Changes.
I also suggest you check Power Management in Properties - Dell 1705 WiFi +Bluetooth). If there isn't a check mark in the box then I suggest you place one in the box and then restart system. If there's a check mark in the first box then I suggest you uncheck the box and power off/ power on the system.
I tried to reinstall drivers, more than once. Also tried power managment. It's Windows 7 and LXLE Electrica 16.04.1 dual-boot. Tried troubleshooting - only thing troubleshoot can tell me is that wireless capability is turned off.