Audi A3 STARTS AND DIES INSTANTLY?

HI There, MY AUDI A3 TDI 1.9 Year 2000 90 BHP has gone wonky, today the Instrument cluster warning lights, only some of them came on, then I tried to start her up she starts every time, but dies out Instantly, all fuses ok, fuel to injection pump ok, is it an electric failure to the ecu, HELPPPPPPPPPP.
Thank you des.