I think installing sierra bricked my MBP somehow, help?

[Silly Ducklings]

I've had this MBP retina 2012 for 5 years now, and I've never deleted anything off of it, and only use it for browsing chrome and watching youtube and anime ever since i got my gaming PC 3 years ago.  I was going to factory reset it, as it's had a nasty glitch where the screen won't turn on when I boot it up until I've closed it and re-opened it for a while now, so I was downloading sierra so I could reset it and have the latest OS at the same time.  Once sierra downloaded, it pulled up some prompt and I accepted a bunch of stuff that I didn't bother to read, walked off, and when I came back everything was black.  The only thing that happens now when I turn it on is I hear the chime, and the caps lock indicator seems to work as well, but the apple logo stays dark, as does the screen and back-lighting on the keyboard.  Is there anything I can do to fix this, other than sending it off to get repaired somewhere?  I've tried booting it in recovery mode, but it's the same as normal boot, just a chime and darkness. 

 

Also as a side note, this seems to be either completely different from the glitch I mentioned, or a much worse version of it, as with the glitch the back-lighting and apple logo still worked.

[The Sloth]

sounds like a display issue, get it checked out at an apple store. 

[Zando_]

Reset the SMC and PRAM? 

[Master Disaster]

Press and hold the power button until it switches off then hold down the D key, turn it back on again and keep D held until it would normally of booted (D boots into Apples diagnostic utility).

 

What happens?