Change your password.

Make sure your desktop and your laptop are not using the same static IP addresses. In this case, you will need to reconfigure your modem and PC/laptop for DHCP addressing. Refer to your modem's manual on "How to restrict access using MAC-addresses". There must be something like: "open your browser, type 192.168.0.1, go to "Security/Access restriction tab", choose "Allow access to the modem ONLY to the following computers", press "Add MAC address" button, use "mac addresses scanning tool" to see the addresses of your PC/laptop" and add them to the access list, blahblahblah, "apply settings"...

Hello friends

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Broadband is the general term used to refer to high-speed network connections. In this context, Internet connections via cable modem and Digital Subscriber Line (DSL) are frequently referred to as broadband Internet connections.

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Surely when your operator changed your ip...there was a conflict between your lap and desktop and a router should be the solution!