I had the same problem. Tried evertyhing suggested this morning at 4 am finally found the solution. I don't sure it's risky or not but if you turn off 'secure boot' thing it will work i guess. It's blocking the nvidia to take over the process.
Between nVIDIA's poor driver implementation, and the total removal of all GPU front end hardware from their video chips for mobile devices that have Intel processors, it remains a Geforce problem that a Radeon will not have. If you buy a laptop with the AMD video graphics, you still get a complete GPU, not merely the back half of one.
The Geforce Control Panel Settings should override everything else, other than failing to plug the laptop into a wall outlet, and if those settings fail, the you (those members still experiencing the problem) should be complaining to nVIDIA on their forums, and to their tech support.
