DV 610 Genius Cam not working

I own a DV610 for 4 years now and was very happy with it...for the last three months I was using the cam as a webcam attached to my computer. However, while the computer was off, I disconnected from it and now the cam does not work anymore. I thought it was becasue of the battery, but I charged it for almost 10 hours and the cam does receive enough energy to light up a dim image on the LCD screen and make a static noice through the speaker. What is wrong??