My Vostro 1200's wireless switch suddenly diabled itself. No software installs or anything else changed at the time. No end of trying to get it to enable all failed and so eventually re-installed Windows 7. The result is the same. Disconnected and reconnected the Intel 4965AGN card with no effect. Wireless diagnostics say the wireless switch is disabled. I was debating whether to buy a new wireless card but don't know whether the switch is separate from it in which case replacing the card won't help. Obviously tried Fn+F2 and that just states it is disabled. Wireless card seems to be correctly showing up in Device Manager and I have repeatedly re-installed it. Any ideas?