probably was wrong patch or something like that ,
Do'nt worry ive had that happen to myself quite a few times aswell ..
There is an Easy fix however you'll be glad to hear ..
switch the box off at the back top Left ON/OFF button
Next hold your finger on the CHANNEL UP Button on the front of the box itself next to the round LED Display
keep holding the CHANNEL UP Button untill it brings you to the Installer Menu on the TV Screen
now navigate down to Factory Reset and push ok your remote will respond once your in installer menu
you will have to select YES at this point and wait for box to boot up again
once thats done then be carefull not to load the same incorrect dodgy patch again
Good luck : ))