Below, I present the perfect solution if your newly upgraded or installed Windows 10 computer or laptop boots to a blank screen, not responding to any key, lest giving you a chance to login.
Why blank screen?
Well, without much of the tech talks, whatever causes it may have to do with display drivers. It happens to my upgraded laptop each time it downloads and installs some updates. But the step described below will solve it.
The solution
When the computer boots to the blank screen, and not progressing, simply tap the POWER BUTTON once. Just a press and release. Don't press down. The tap is sufficient to shut down the computer. Which means after the tap, wait till your computer shuts down. Once off, tap the power button again to restart the computer. And this time, it will finish the booting. Repeat once more if not solved and twice is enough to solve this.
That is all. Enjoy Windows 10! Its very cool.