this is not the way i wanted my first post to go but shit happens!!

i have had this 91 LWB safari for about 3 months now which is slowly getting built up but a sad thing happened this morrning,went to leave for work jumped in and turned the key and was greeted with a very bad sound and it would not start wouldnt even try and fire... i don't get how anything major could of happened as i drove it home from work the night before and it was fine started fine drove fine was fine lol
so i luckly got the day off and first thing i did was bleed it that was fine and didn't make any difference...
taken the sump off checked crank, rods, bores, and what i could see of the pistons... looked fine no braoken bits in the bottom of the sump
took the tappet cover off checked that the cam was working...fine
took the rockers etc off checked the valves were seating.. again all seems fine
so now im lost

i allways do oil and filter changes every 5000km flush every 2nd change...i turboed it about 2 months ago running 12-14psi and no more than 600 EGT...
sorry starter is turning engine over as per normal but the engine will not fire at all...
any help would be awsome... thanks Jacob