So I am trying to install Microsoft SQL Server 2014 Express LocalDB for days now, but I am running in to the same error over and over again.

I tried everything I could think of:
- upgrading windows by using iso (while I was on the latest version already)
- assigning both my self as the administrators group permissions to "start system services"
- starting the service by hand (il come back to this below)
- reinstalling it multiple times
- trying it on another pc (vm)
So I tried to install it on a VM which did work.
I also tried running the service manually which resulted in this error:

I contacted Microsoft support tons of times, but they also can't help. So this is really my last chance.
Anyone knows how to fix this without needing to reinstall windows and losing all my files?
Huge thanks in advance!

