... hmmm, just a lucky guess: Has the name "Herkules" any let's say "relation" to your company? If so, we're very probably talking of the same person ;-)
But back to topic:
A friend of mine was just hired out of another contract and works now as sysadmin for a large software development company.
He has no certificates at all, not even did he finish secondary school. And he has also no job training. So to say, he's totally uneducated.
But he tought everything himself about IT and administration. For years. He has no IT certificates not because he wouldn't pass the test, but because it's not important from his point of view (I'm talking to him like maniac that he's wrong in this point).
University grades are _not_ meaningless. Especially not if it comes to your monthly payment. Ungraduated will earn less, noticable less.
Without a grade, you won't be able to get certain jobs. E.g. becoming sysadmin in a bank or public office, or at government. There you just won't pass the entry level -- regardless if you're capable of actually doing the job or not.
So, without a grade you first and absolutely need a _perfect_ letter of application. You have only one or two pages to tell the HR people that you're the right person regardless of your education or grades.
You shouldn't tell them streigt "I did not finish school at all, school sucks", but distract them by tactical ommissions. E.g. summing up your education and your carreer very short and using only the starting years instead of start and end. When you write "1992: Secondary school; 1996 web programmer at XYZ", they might not notice that your secondary school time was a bit too short to finish.
To cut it short: Becoming a sysadmin in a medium size or bigger company is possible, even for "uneducated". But it's hard, and nothing I would advise. You'll have to compete with people having the right papers allthough they can't do the job at all -- and it's usually the entry level which is the hardest. If you've managed to get to an interview, you can demonstrate your qualifications.