Black screen over the booting

Hello,

I need a help, yesterday i downloaded ZORIN core 15.3 64bits, it was working and after some hours while i was downloading some games, suddenly the screen get freeze and after to restarted it became black, whole the screen but the computer still worked,

I even tried to take back my windows 7 lite, impossible, i even removed my hdd in hope to take into the another computer to install windows 7, it's not, pc screen remain black, i took my frend's hdd already install in hope to check if my screen has problem but it remain

@Well63 Hi and welcome to the forum.
This seems to be a duplicate of this thread you started:

I will close this thread, You can continue on the other one.