Hello, sorry my bad english.

Yesterday I put the firmware on my A710 and it work fine. But today while I was reviewing some pictures in my camera, the screen go black and dont respond. Now, whend I push the on/off botton the screen with the canon logo is displayed just one moment , beeps some times and moves a little the objetive.

What can I do? Can I 'Reset' the firmware?

Thanks.

there is a help section? ... did you try to start the cam without a SD card?

Recharge the batteries? This sounds exactly like what happens when the batteries are dead. :-)