The camera won't turn on!

Hi all

Last week when i was taking a photo i accidently turned on the flash mode on my camera. Suddenly the camera just went dead and now it refuses to turn on.

I changed the batteries it still doesn't work!

Strangely enough, the camera still works in webcam mode when connected to a pc and i can also view the content of it's memory.

I would appreciate if anyone could help me.

Thanks in advance