stuck key

Sorry for the long title. Basically the issues is this. When I try to type either ' or @ in the English UK on windows 10 I need to hold the key for a while before it registers, then it types it about 10 times (because I'm holding it down). At first I thought the keyboard was broken but I also...

Hey everybody, I have a fairly old laptop that produces the most deafening of beeps after the "lenovo" screen (which if I understand correctly, is the POST screen). This didn't happen until some days ago; I took it to a technician, who told me that there was an issue with the keyboard. After...