USB keyboard wont boot

[sufian.pro1991]

Hello, I have dell desktop core i5, I've been trying to install windows 7 on it. But my usb keyboard wont boot before windows start up. I usually use ps2 keyboards in these kases but motherboard dont have ps2 ports.
I tried to reset CMOS battary but nothing changed.

 

[rocktalkrock]

Have you tried plugging the keyboard in every one of the USB ports.

 

[sufian.pro1991]

I just did and fixed! The keyboard worked on the second port, thank you