Macbook air wont boot up, stuck at back screen

[fredo32i]

i recently had bought a used macbook air 2014 model a1466. it was working fine and then one day i went to turn it on and it showed a gray folder with question mark.
i tried to restarting it once more and the macbook turned on but the screen just stayed back and the keyboard wouldnt even light up.
iv tried pretty much i could find on the internet from unplugging the battery to every start up command i could find and it wont get past the black screen, i have also tried replacing the SSD with no luck
the only command that happens to work is control-option-shift-power, but that only restarts it back to the black screen.

going to a apple store isnt in option since im miles away from one

i would appreciate any help or information i could recive.

 

[winmac2015]

When you reboot your macbook and you hear the little startup ding hold down option and click the hard drive your mac os is installed on. See if that helps.

 

[fredo32i]

When you reboot your macbook and you hear the little startup ding hold down option and click the hard drive your mac os is installed on. See if that helps.

i have already tried this, i held option for a good couple of minutes and nothing comes up. i think it might be the logic board