2 'Omit' is a transitive verb, and it's unnatural to say 'Am I omitting'
| link

Am I omitting correctly here Is this a correct ellipsis in this sentence?

source | link

Am I omitting correctly here?

So, I'm writing this sentence:

For some strange and, one would say, unrelated reason my computer failed to boot properly afterwards, and hasn't been able to since.

What am I leaving out here? To boot properly or to fail to boot properly?