Computer won’t start after windows update is stuck

[SamsonMakTKOLTT]

Hi,

My EliteDesk 800 G3 won’t start after a Windows 10 update stuck. 

An automatic update of windows 10 stuck at the re-starting screen for 10+ hours. So I have decided to press on the power button to re-start it manually (cardinal sin I know). Then it won’t boot up again. 

The blinking pattern that my computer is giving does not match any of the patterns mentioned in the manual. There’s no red light. Just short white light blinking every couple seconds. 

Please see this YouTube short for your reference:

 https://youtu.be/f6AkX7hFFiE

Thanks. 

[itsmyname]

@SamsonMakTKOLTT -- a "short tap" on the ON/OFF button may have put Windows to "sleep", causing that steadily-blinking lamp.

Hold-down the ON/OFF button for up to 30 seconds, to completely power-off your computer.

Then, tap the same button to restart your computer. What do you see?