I currently own a Lenovo (G50-30) Windows 8.1 laptop. I have noticed when the power button is pressed the only thing you see is: It appears for about 21 seconds then boots into windows. However, I wanted to be able to view the POST when it was booting up, but I couldn't find an option anywhere I looked (BIOS etc.). I tried to question the Lenovo support forums but it wouldn't let me log in, so I have had to come here to see if anybody else has any ideas. So far I have managed to come to the conclusion that it is possible to be able to view the POST while booting, but I have not found a way to prove it.