Pathtracing render color/bug problem

[inesalpha]

Hi ! Hope it's not a stupid question but i'm having problems with my pathtracing render.
The preview is ok, but when I render, the colors are very saturated and there are lines and pixels glitches everywhere
I don't know how to fix this and even what to type to find an answer on the forum :-/
I'm using mostly default settings...
Attached the preview, the render and my settings.
Thanks so much for your help.
ines

[aoktar]

Hard to estimate what you did here! But try to reset render settings or create new scene and copy objects here and try again. And don't forget to cache dynamics or particles for animation renderings.