Will the engine start ?
If not this could be worth a try.
If the instruments don't go through the self test, needles swing full scale then bike goes into start mode, try replacing the front of the 3 relays under the lh side panel, ie a headlamp relay from a Rover 75 works as it's a standard relay. That one is the ECM relay, then there is the fuel pump relay which works after the ECM one and gives electrical motor sound just before you can push the button to start. I can remember what the 3rd one is as it's so many years ago that I had this problem on my 05. You can also prove which relay is faulty by swapping them and seeing if the problem moves.
Obviously, if the bike starts it's something else.
The accessories fuse can stop the instruments working if it's blown, check it especially if you have the clock and fuel guage.