Why doesn't my keyboard work?

help! i just bought a new keyboard because my old one cant work, so i pluged the new usb keyboard in then it turns on, but i cant type! plzzz answer. f*Ck!

When I press the right arrow button on my laptop keyboard nothing happens but when I bring up the on screen keyboard and click the right arrow button thats on the screen it works. Does that mean its a hardware problem or what?

i was making a beat using my pc keyboard and then it just stop work help please!!!!

when im on an online game site my direction key wont work why?

On my other computer, I can use my keyboard until it says Michsoft Windows XP with a loading bar underneath (I tested with numlock) Please help <=(

when i put in the usb for my keyboard and mouse nothing seems to work. i cant even restart the computer, i have to press the on and off button which cant be good for the computer. the laser from the laser mouse is on but there seems to be no movement...

Basically I plugged in a wireless logitech keyboard into my laptop and it works great. When I unplugged it the keys on the keyboard worked as if function was alwyays held down even though it wasnt.

i have Logitec wireless keyboard n mouse,(im not a computer illiterate) till yesterday everything was working fine but today, when i boot my computer to install a windows copy the keyboard doesnt work, but i am able to enter the BIOS and the keyboard...

So i have a HP Pavilion desktop and it came packaged with a Keyboard and a mouse. Both usb wireless. My mouse works fine and but my keyboard doesnt. I tried everything, new batteries, different computer i even called HP to send me another one and this...