hgelbwachs1

this is the view in standard mode

When I try to render in Physically Based, this is what the rendering turns to. It does this with the sunlight toggled on and off. My graphics card is up to par and its a brand new computer. Has anyone experienced this? What's the solution?

How can I create this sloped wall that curves into a desk? I cant figure out how to do both at the same time. it either slopes or curves...