Replying to Why does...

my keyboard keep doing this? I have to click certain keys several times (sometimes even 5-10 times) before the letter pops up on the screen and it's very irritating. Sometimes I have to slam my finger down on the key for it to recognize that I clicked it. It's not that my keyboard needs new batteries (I have a wireless keyboard on my desktop) because I changed them and the same thing keeps happening. Please help out NS. How do I fix this?