Config for H8400 filament PLA 1.75mm


I’m starting in the 3d printing and I would need some advices or help. I have a vertex K8400 with quite a lot of problems because she doesn’t print in good quality. I’m printing from the computer.

Would someone be able to send me his config that works? Or tell me other way to find a solution?
On the computer, I’m working with Vertex 3D printer repetier host v1.0.6

Thanks for your help!

Best regards