Desktop keyboard types the number 1 as well as letter a.

Hello,

My desktop keyboard types the number 1 when trying to type the letter a. Also the top row of numbers isn't working properly. The number 1 doesn't work and when I press the number 2 it is followed by this: 211111111111111111111. the same for 3111111 and 4. If I press the num lock key then I can use the numbers on the key pad. I have not corrected this las1t sentence so that1 you ca1n see what1 is ha1ppeing. Ca1n a1nyone help?

Many thanks. Mandy