IP just stands for "Internet Protocol" and every piece of hardware between your phone socket and you has a (numerical) address.
Your router is one number
Your desktop PC is another
Your printer
Your scanner
Your laptop
Mobile phone with internet connectivity (got any of these)
If you've bought any -new computing devices- which expect to become part of your home network, you will need to run the Home Network Setup Wizard again, to get these addresses setup correctly. Two devices are currently competing for the same address, it appears.
If you use a Wireless router, then run the Wireless Network Setup Wizard.
It does tell you to get all the equipment on the network powered up when you do this but you can select an option to "just run the wizard" which sorts things out for that machine and makes the error message go away. Do the full routine properly at a more convenient time.
I don't know if the dongle counts as Wireless type network or Regular (wired) network.
Either way, I think the problem is that your laptop is trying to use stored settings which work when in your house but are inappropriate for the dongle.
Try running the Network Setup Wizard in Control panel.
If you have no other means of communicating with AB than this laptop, then await more expert advice than mine - just in case it goes wrong.
Its just disappeared on its own,
we have free internet in the village but the signal is awful since they closed one of the telephone sub stations that used to boost the signal, some times it works, more often than not , it doesn't, maybe I was picking up something from that, dont undersand these things, thanks for your help. X
Uninstall the dongle from "Add Remove Programs" or "Program Features" (depending on your OS), ensuring that your dongle is detached.
Then plug it in (or use the disk supplied) to re-install it.
you didnt mention a dongle in youre OP
If you turn thing off then back on again they can reassign themselves a different IP address and solve the issue. Not sure why you got a conflict, maybe the guy with the surveillance equipment outside was having a nose ;-)