Switch wifi does not not Dell Precision M4800

I bought a dell precision m4800 he came him windows 8 I updated and now my wifi switch does not work it does'nt turmn off and now I can not turn on the bluetooth as well, it says that you need to activate the wireless hardware, but it is already on

There is a small hardware switch on the right side of the machine, above the door of DVD. When I slipped forward, turned back on wifi radio. At took an hour to find it, but all the help notes kept insisting that the hardware switch was off.

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