I have an acer aspire v3 - 731. my wifi is turned off and I can't turn it back on. How can I fix it?

I have an acer aspire v3 - 731. my wifi is turned off and I can't turn it back on. How can I fix it? I know nothing about computers next please developed. Thanks in advance.

Try to use the fn/f3 as the computer starts when you first see the Windows logo on the screen.

Tags: Windows

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    You must be at Service Pack 3 level before you can use Windows updates.

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    UTC/GMT is 14:12 on Sunday, October 28, 2012

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