Watch the video:
Timestamps:
0:00 - Explanation
0:40 - Fix "System cannot find the file specified"
1:30 - What if this fix doesn't work?
Trying to use WSL on Windows, Ubuntu or any other distro, but can’t because it just won’t start at all? Something about “System cannot find the file specified”? Well, this video shows you a few fixes that are likely to work for you.