I'll try to summarize what happened here:
My laptop is out of warranty already, I, however, sent it to a repair shop that was supposedly authorized by acer because the fan started to do a lot of noise, this being an ultrabook I did not wanted to tinder with it.
I waited for 20 days until the guy at the shop told me they sent the wrong replacement fan, I needed the computer to pull some info for work, got a little bit desperate and just picked it up and ordered the fan on ebay to replace it myself, unfortunately the repair shop returned the laptop to me missing a lot of screws, tiny screws. They of course said it was not their fault, yadda yadda.
Question: Does anybody knows what size are those screws, particular for that model (Aspire S5-391) ?
Thanks in advance!