Dell Optiplex 0KKYMN Desktop(Black)

your pc is on but all you see is  black screen and it doesn't seem   it's going to boot in windows anytime  if you're currently experiencing this   one let me show you a quick solution  everything you need to know coming up hey what's up guys it's Mac here and we do a lot  of tech related videos like this one if this is   your first time consider subscribing with that  said let's begin now before we start let me remind   you that this troubleshooting tutorial is only for  pc that has a black screen only after pressing the   power button even though the pc is running if  your monitor shows the no signal sign like this   then we got a different fix for that just  check out the top right side corner of your   screen to check that out anyway there are only  two reasons why after pressing the power button   on your pc doesn't boot to windows desktop  but instead you only see black screen wel