Download Autoruns:
https://live.sysinternals.com/Autoruns.exe
Right click on Autoruns and Run as administrator.
When it has finished scanning, in the Filter box up top Enter: wscript
For every entry found, click on it so it is highlighted, then look at the pane at the bottom of the app.
If the file path (at bottom) references startup.vbs, then uncheck that highlighted entry in Autoruns.
If filtering wscript doesn't turn anything up, try entering startup.vbs into the Filter box.