Oh oh, looks like this is going to become complicated, but please be patient, we’ll try to get this sorted, even though it will probably take some time.
First, is there by chance now something in that VSTAudioEngine_64 folder? I guess not, but it’s worth asking.
Second, what kind of audio interface(s) do you have? Is it dedicated external or built-in sound device, or both?
Please disconnect any external device and try to start Dorico, still the same?
If still a problem, please also disable temporarily any built-in audio device. You can do this in the Device Manager control panel (press the Windows key and then type ‘device manager’).
It must have to do with the audio devices, because other than that the audio engine does not have any particular hardware dependencies.
Officially we don’t support Dorico on Windows 7, but we know of many people who run it successfully on it, so this shall not be an issue.
Instead of starting Dorico you could also try running the audio engine process directly. Double click on C:\Program Files\Steinberg\Dorico\VSTAudioEngine\VSTAudioEngine.exe
The process will only show a splash start-up screen and has no own window, but after successful launching the item ‘VSTAudioEngine’ will appear in the process list of the TaskManager.
Do you see the splash screen? This can give us a hint at what stage of start-up the crashing happens.