Which version of windows are you using? I had the same problem and I'm
running windows 10, I had to re-install Windows, after that I had no
problem installing runtime.
Found out my problems were from my version of windows 10 not being rtm,
I was running insider preview versions, had to reinstall windows 10, now
1.3 installs and runs just fine.
I got the wonderful news that I won't get my CV1 until June, even though
others who ordered theirs way after I did already got theirs, I don't
understand this.