Keyboard/Mouse don't work

[mitsus]

Hi all,
After an installation of Linux MCE with DHCP server "ON", when i lauch it, keyboard and mouse don't work, in sense that i don't able to click nothing on graphical interface, but i'm able to use its on Kubuntu system and i use well Linux MCE HTTP Admin interface.

This problem is on when i've reinstall Linux MCE using DHCP server build in. While on past installation without dhcp server all work fine!

Someone can halp me to solve this problem?