He3* 0y 2eyb6ard 5s ty*5ng n40bers re*3ac5ng 3etters f5x 0y 2eyb6ard?

I know that ussually, on a notebook computer if your key board starts replacing letters with numbers find the "Fn" button and hold it while pressing "F11" or whatever key says "NumLk"
had this problem before, any other suggestions?
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