Your english is actually pretty good
(at least better than many others on this forum)
The only thing that I can think of that isn't on the list is that I always set my HDD as the first boot device. However, this will not make any difference because you have already checked to make sure that the floppy and CD drives are empty. Of course I'm assuming that you only have one HDD, but I think that's fairly safe, and that you would know what to do if you had more.