The Q6660 Inside said:
But the problem is the metal is fully painted black to the point I think the CM CEO is a huge Rolling Stones fan... So, will plugging the PSU (X850) switched off (Back IO) but plugged in counter the fact the metal is black (I've heard they will not discharge you if they are painted) and discharge me?
OK before you work on electronics you want to be sure you are static free. A good way to do this is to touch anything grounded that conducts electricity. The screw in the faceplate of the power outlet is good for that.
After the computer is built the power supply has three plugs, one is the ground. That will transfer to the meal case through the screws holding the powersupply in. That grounds your case. Your motherboard and associated things attatched to the motherboard is grounded through the power supply connectors that contain grounds.