Why does my Acer Aspire 5570z say "NO DEVICE" when i try to turn on my bluetooth?

Hello

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Why does my Acer Aspire 5570z say "NO DEVICE" when i try to turn on my bluetooth?

Can someone please help me I did turn on the bluetooth on my phone but when i try to turn it on on my Laptop, it wont let me. it says no device
 
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