Your nodes are wrong.
In your first image - your bump node normal output should be connected to the red glossy normal input. Instead you have the colour ramp plugged into the glossy normal input - which is causing your jet black appearance.
In your second image - You have the colour ramp plugged into the “Normal” slot - not the “height” slot in your upper Bump node.
Also - your environment in both scenes appears to be just a black sky and white ground with a sun lamp. Glossy materials depend on a more detailed environment as they need something to reflect. Try using a HDRI environment map - there are plenty of free ones around.