[s-cars] braking problems

[Sla]

hello folks.
shit happeness....one morning i start the engine of my s2 and suddenly
exclamatory mark starts to flash on the dashboard. i started to move and
noticed that there is almost no brakes at all! the brake pedal starts to
pulsate when i press on it and there is a strange ticking noise from engine
area. i tried to swith abs on and off- the same.  looks like there is no
power braking, it is imposible to block the wheels at all. what would be
your diagnose?
thank you in advance

sla s2
lt