T500 Wireless radio is always off.

I have set the wireless switch on, checked the Device Manager, and done the Fn-5 thing.  Nothing, it seems, will turn the radio on. I am using Windows 7 and I know that the hardware works because it worked for the first three days I had the computer.  I have spent days looking for a solutions. All drivers have been checked and are up to date.
The wireless adapter installed is the Intel WiFi Link 5400 AGN.  The Lenovo site suggests that I should be looking for a LAN Mini PCI Express Adapter - this seems to be missing. There is no instruction about what to do if this does not appear in the list of Network Adapters.  Is this my problem - and if so, how do I correct it.? Any other suggestions, please?

Try going to the device manager and uninstall and installing the wifi card. this should solve the issue.

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    Did someone help you today? Press the star on the left to thank them with a Kudo!
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