OK, I've been using my wireless internet fine for the last 6 months plus. Then today, for some reason, it stopped working entirely. I'm using a Dell Inspiron 510m laptop, with an Intel Pro/Wireless LAN 2100 3A Mini PCI Adapater. I'm using Sky Broadband, and if I connect using the wires it works fine. Similarly, the wireless works fine on the other laptop, so I'm guessing it's not the connection. Sometimes, it can find my network in the list of networks, but it won't let me connect to it. Nothing happens when I click to "repair" the connection. Stranger still, my computer is completely slowed down whilst it apparently is searching for the network, and nothing works properly until I click to disable the network.
I'm not exactly great with technology, so any help (in relatively simplistic terms) would be really really appreciated!! I'm really getting frustrated with it!