Internet not working at home.

Hello.

So i have a very strange problem with my internet, so the problem is when i am at my dads house my internet will not work if there isn't another computer nearby, so if i want to use the internet i have to have someone computer nearby and that is kind of a problem. When i am at my moms house it works fine, and when I LANed some weeks ago it also worked fine. So the problem is not hardware i would think.

So i used the windows troubleshoot thing i think it's called in english and when i do 1 problem always comes up and that is "Local Area Connection Invalid IP Configuration" so naturally what i do is search for this problem and so i try some suggestions like calling our ISP if they could help me but they didn't know what the problem was so the couldn't help me, i also tried some commands in CMD but nothing happened so i come here for some help.

I also use D-link home plugs for my internet but that also worked at the LAN so that shouldn't be the problem?
I also read something about having a virus will trigger the firewall to do something and i had some kind of virus that i removed, i did use the system recovery to when it worked but the problem was still there.

I don't think there is anymore information i can give you and i hope this is something you can work with.

Thank you.

Kaktussoft said:

my internet will not work if there isn't another computer nearby

So it DOES work if there is another computer nearby? nearby WHAT?

Can other computers connect to same router and access internet that way? Are you connected wired or wirelessly?

Sorry, i mean nearby my computer and yes, all the other computers in the house can connect. Im connected wired through a D-link home plug. All the services are started, and i dont have the wireless one for XP/Vista.

I tried using the cable on a laptop and it was the same problem which was weird because i had tried that before, but seeing as it doesn't work i guess the HomePlug thing is the problem because i used different ethernet cables also, i just find it strange because the HomePlug worked at the LAN.

I really dont know why having a nearby computer changes anything haha

If i connect directly to the router with a laptop it works, and i've check all the cables. I'm gonna try another pair of HomePlugs tomorrow and we will see if that is the problem. Thanks for the help and if it works tomorrow i will let you know.

I tried those things aswell, and it didn't work. So i exchanged the HomePlugs and it worked fine. Something that might work for future people with this problem is reseting the router.

Thank you very much for the help though.