My keyboard keys don't work?

okay my keyboard key's won't work (i'm on a friends computer) when i type the period button it turns up like this > if i type the numbers on top of the letters they turn out like this !@$%^$#$ and when i don't have cap lock on all the letters are capitalized if i turn it on they are lowercase... show more okay my keyboard key's won't work (i'm on a friends computer) when i type the period button it turns up like this > if i type the numbers on top of the letters they turn out like this !@$%^$#$ and when i don't have cap lock on all the letters are capitalized if i turn it on they are lowercase please help me!
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