You might want to try adding what troubleshooting you have done, posting the debugging output of the boot sequence, etc.? This is like going to the doctor and saying 'I'm sick' and expecting him to fix you based on just that...I have upgraded from 10.12 to 10.13 however i am stuck on the Black Screen. The update went through successfully but the screen is Black.
Updated mine to High Sierra 10.13.3 a few weeks ago. No issues so far and I am using the Web Driver .104 with my EVGA GTX-970 to get around the reported mouse lag issues.