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Your Compaq V2000 has an Intel Pro Wireless 2200 BG wireles adapter. (doesn't support N, but that's not the point I think)
If your new network configuration is based on WPA/WPA2 encyption, this adapter has some known problems to establish a connection. It works great with WEP, but not so well with WPA. Sometimes the issue can be solved by installing the latest versions of drivers and software for the wireless adapter. If it still doesn't work, a known workaround is to disable via device manager all other network adapters in the computer (ethernet adapter), leaving active only the Intel Pro 2200 wireless adapter.
you will likely need to add an ethernet interface / network card. If you have a spare USB port, then use a USB Network adapter. If not, then you will need to use a PCMCIA (aka PC Card) network adapter.
check if you have a Wireless Network Adapter installed. Right click My Computer = Properties
Click Hardware Tab and look if you have a Wireless Ethernet COntroller there. If you have, then good for you. FInd a hotspot in your area and get connected to the internet
that might take an uninstall and reinstall of either the ethernet drivers, or the operating system. I haven't heard that, but I have had machines that aren't as reliable in the wireless as they could be. it's possible that something in the workings of it has gone haywire, but it sounds like an OS issue.
Back up everything you want to keep and reinstall the OS if possible.
Hi, Just to make sure im understanding the situation properly - you have a laptop and connect to the internet through a wireless network right? And then when you go to open up internet explorer or whatever program you use it basically says you're not connected to the internet.
It does sound like your wireless card has gone bad but when you say that it still has the icon down the bottom of the screen telling you that you're connected to the network, it sounds like it could be something else. It could be a range of things from there though, there are some viruses that corrupt something called the LSP and when that is broken it has the same symptoms as you described. Also it could just be a setting in your anti-virus. I know that Kaspersky Internet Security suite has a problem with its anti-hacker function that blocks internet from working like that.
Try disabling all of your anti-virus / firewall programs and then accessing the internet. If that works then its only a small problem. If it doesnt work and the icon is still there saying you are connected to the wireless then there is a small program to try running called LSP Fix, available at:
Other than that i'm out of ideas. Changing the wireless network card in a laptop does sound challenging though.