Hi,
A while back ( not that long ago) someone posted having trouble with a single device on their home network being unable to connect but otherwise all the other devices would. Turns out their (laptop?) was running Windows 8.1 and there was a known issue with the provided telecom technicolor modem (which I think was being used for VDSL ) and Windows 8.1.

So I can't find the fairly recent thread now and I really need to know the model names of the modems involved as a friend of mine is having the same issue.

All devices at her house will connect via wifi and be able to browse the web but this one laptop won't. It WILL work via Ethernet at her house. Also, the same laptop will connect and function correctly via wifi at work.
This would seem to suggest the laptop is working correctly, just not with her modem.

Her ISP ran her through a bunch of attempts to fix the connection with no luck.

I'm wondering if she has one of the modems not compatible with Windows 8.1.

Was the issue only with wifi and Windows 8.1 with those modems or did it affect Ethernet as well? Because hers works with Ethernet...

I'd appreciate someone pointing out where that thread is. It was in an 'odd' category because initially the OP didn't know what the problem was.