Olympus E410 mirror locked up

the mirrrw on my olympus e410 is locked up. It will not go into live view, I have tried changing to a different battery, resetting all settings to factory original., removing lens (28-90). You can pull the mirror down but it will not stay in that position. Information, menu and picture review all work fine. mettering and auto focus try to work, can see them in the viewfinder which is otherwise dark. You can hear the auto focus motor working. If focus is set to manual it will try to take a picture but gives a D 8805 message and the red prossing light does not stop blinking