Sucks, but not Riot's fault. And if they removed delayed queue for everyone that claims their compy 'crashed' everyone could just hard boot their computer and Riot wouldn't be able to tell the difference between that and a crash, so they couldn't enforce their rules.
Fix computer, try custom games till you're sure it works out.
It's also not your team mates fault that your computer crashed, but they had to suffer through 20 minutes of 4v5...so, just think of it like you're making it up to them.
Edit: just chill and listen to something like this while you wait:
https://www.youtube.com/watch?v=nhDPIgM1xQw