I purchased a new Canon 400D about 2.5 years ago. Since the day I purchased I have used a 1gb Sandisk Ultra Compact Flash.
Two days ago I finally upgraded to 4gb Extreme IV. I went to put the new compact flash in, turned the camera on and it has stopped working. Absolutely nothing, like there is no battery in the camera.
It was working 1 minute before I inserted the new compact flash and the battery charge was showing as full. I have since recharged the battery, tried the old flash card but still nothing at all, no life in the camera whatsoever.
Anyone have any ideas?
Thanks in advance.

