Will Not Start Help Please

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Car as been running great till last night.......

It will not start Its something electrical there is power to the car pre ignition is there but nothing else, I came to start it and the dash lights flashed like there was some type of short going on then settled down its got a start button that does both pre ignition and start once the clutch is depressed it does pre but nowt else

​This morning I came to unlock it it made a weird clicking noise then the alarm went off did not unlock now my neighbours are up after trying it again it unlocked but still the same as last night

​So Battery can be eliminated as everything seems OK that way all lights are working and it seems to have full power ( being tested later ).

Can't be the starter or the glow plugs we not getting that far.

​I got a mechanic coming out later but think am going to need a auto electrician

So I put in here anyone any ideas I not thought off ????????

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Not that I think it matters but its a VERSO 2.2 D 4D T Spirit :)