Vista - Problems turning on wireless adapter

Hello

I have an Asus laptop with WinVista 32bit Home Edition, and I've been having problems with my wireless connection at home. A month ago I bought a wireless router and everything went fine for some days, although I had some problems when configuring my wireless connection.

Now, my laptop's wireless adapter light won't turn on, not even with the On-Off button on the side; keyboard shortcut Fn+F2 won't work too, and I've downloaded Wcourier Console; it worked for a couple of days, but now options appear greyed-out with a little red cross over them, and it won't work too (check images bellow).

I've tried everything from system restores to reinstalling Wcourier and updating wireless adapter's software, but nothing will work, and the most annoying fact is that sometimes the wireless light turns on without me doing anything and it works. Yet again, it can last for a whole day, but as soon as I restart the computer, it won't work again.

My flat mate has an Asus Win XP lapton and everything's fine with her connection, so it really isn't an acess point problem. My wireless adapter simply won't work.

Can somebody help me?

Are there any settings in the BIOS to control your adaptor.
Have a look in device manager to see what is going on(look for those red x`s).
Try a restore from before it was starting to happen.
Restore the drivers from the manufacturers disk/website.
I suspect it may be a hardware failure.
Before taking it back backup all your data.