I installed a DIGITUS Wireless Lan PCI adapter on a computer that has multiple accounts. It works fine, but after installing it, I can no longer use the other user accounts. Also, the "Switch User" option seems to have disappeared, I can only now use "Log Off", and can only use the main account on my desktop Pc (the one I used to install Lan adapter). My computer is HP.

Finally, I tried to use System Restore, but it seems to be of no help, since I must re-install the adapter to be able to use it (I need to acess the Internet - previously I used a cable, but now I can only connect to the Internet via wireless due to conditions - and I want to be able to keep using the wireless adapter).

Can anyone help please?

Thanks.