i have a GR-DVF31U model that shows the eo4 code...........i recently recorded some valuable footage with a low battery then charged both batteries to play it back but got the e04 code..........what's up?

Hello, I got a problem with my digital camcorder JVC GR- DVL307. It seem to bee an error. Every time when i want to start the menue it shows E 04 on the display. I can´t film anymore, even see private recordings. I bought the cam in August, 8th 2004. Ähm, can you help me? Greets!