You might have a corrupted or broken flash card and if I remember right there is a normal CF card plugged onto the board. You might try to see if re-fitting the card solves your issue. If you can get back into cpboot mode, you might be able to format your card an load software again. Unfortunately, the 650 is no longer supported (since a month), so it may be difficult to get a replacement or support. You can try to open a TAC case if you still have a valid support contract for other products and see if they can help you.