HP CORE O DEOP PC AND I GOT ERROR

Hi,

I've got a dc7800 Small Form Factor system. It was working fine but after a reboot it won't start up normally anymore. The black POST screen appears, RAM testing starts to count up and then I see and error about "system options not set". After less than a second, a blue window in the middle of the screen displays the message "smart card authentication" and below that, "smart card reader not present".

THANKS

PL GIVE ME SOLUTION