After much surfing I uninstalled Kaspersky 2015. As soon as so-doing, my WLAN card sprang into life. Then an upgrade to Kaspersky v16 and all is still well with the world (wide web).

It remains...

But no wireless. :cry:

And I need to find a driver......

No blue screens

Yes.

Dell. I suspect it's the wireless aerial. T'was all part of the original set up. I think that unless I can find a replacement/original driver that works on Windows 10, I'll need to buy a Windows 10...

It only links to the wireless card in the PC. And worked every day until the point I uninstalled the driver

I have a Dell Desktop that has wireless connectivity via a small device that plugs into the back of the PC. It has always worked and it is controlled by the Dell driver I uninstalled.

Having uninstalled the driver and then restarted, the driver appears to have been reinstalled. Although Windows states that "This device is working properly." I cannot connect to the internet...

No driver updates since upgrading to Windows 10. The updates have covered security updates, general for x64-based, Windows Defender (one of which failed to install and so I've re-run and all is OK),...

I'm a bit reluctant to remove the driver on the basis that I'd need to be online for Windows to install it.

I have no idea whether Windows Update has installed any drivers...... how do you check?

Dell Wireless 1505 Draft 802.11n WLAN Mini Card Driver Dell Wireless 1505 Draft 802.11n WLAN Mini Card Driver ...

Unfortunately although I have managed to download a later Dell Driver, the installer won't install it on the "unsupported" Windows 10 platform

Yes.

Device Manager => Network Adapters => Dell Wireless 1505...... => right click => Update Driver Software.....

My Dell Wireless Driver (1505 Draft 802.11n WLAN Mini-Card) has the most up to date driver installed (according to a windows search). Driver version is 5.100.245.200

Zip file uploaded. As far as I know, this has only occurred once since upgrading to Windows 10.