My Medion laptop is having a problem, I could return it after almost 1 year
No, you can make a claim on your statutory guarantee and contact MEDION.
If these "problems" are under warranty, then yes.
Theoretically yes, because you have a 2-year statutory guarantee. But after the first 6 months, the burden of proof is reversed and you have to prove that the defect has already arisen from the factory and not through use.