Failed to find Consistent Initial Values

I am solving a turbulent flow problem in Comsol; and I've been having non-convergence issues. I have used small initial values; and I have also used a ramp function with steady state value of the inlet flow parameters, but the error still persists. The mesh is not coarse, the boundary conditions were well specified. Please, I will appreciate suggestions on how I can tackle the problem.

Regards

Femi