Hi, i have the exact same problem.
Only the first time i turn it on, the screen is only Black, it seams the computer starts up normal - but only with Black screen.
When i press power off button, the laptop shut Down, when i then press it Again, it is in Windows 10 Lock on screen in 3 sekunds....
My bios is 301, Windows 10 home, Gl502VS Windows 100% updated, nvidia 384.76 driver.
Eny surggestions ? did you find a soluion to yours ?