Why is my display not working, sound or restoring

I have had this problem for over a day now. I believe it slipped off my bed. I originally couldn't get it to boot at all, eventually booted after doing smc reset and pram reset. But the display won't work, I have to connect to external display to see the login. Now it will only login with safe mode and when you try to login normally after entering password the load bar gets stuck at half way. I have left it for a few hours and gave up rebooted got into safe mode. When I'm in none of the volume or brightness controls work they are all greyed out, also won't restore from time machine when I select the date the restore button is greyed out. Not sure if this is because of the safe mode. I took the back cover off it disconnected the battery and the display connectors, reconnected and reassembled and still facing same issue.

I also had windows 10 on it running in boot camp but I deleted the partition to try and eliminate if that was causing any problems. Any help would be much appreciated

Thanks