Failed Upgrade (7022 to 7500)

Hi,
after a failed upgrade, service desk refuses to start, and i get the following error:

ServerContainer [CREATED]
SQLOne Search [CREATED]
AdventNetCC [CREATED]
AdventNetServiceDesk [FAILED]
ServerContainer [STARTED]
SQLOne Search [STARTED]
AdventNetCC [STARTED]

Server Started.
Please connect your client at null://localhost:8080

I've tried deleting the "extracted folder" but that doesn't help. luckily, i have an MSSQL backup which i took before i attempted the upgrade and i also took a data backup before upgrade attempt also.

Now i'm looking at restoring back to 7022. Please i would like for you guys to give me the procedure for running a fresh install and attaching my MSSQL backup to the new install, so that i can get all my data and SD+ working well.

Please i'll really appreciate an urgent response an my company seriously relies on SD+ and this down-time is costing us a LOT!!

Thank you