Luis, please don't get angry with me. First, Jon is probably right. Second, I have downloaded at least 25 to 30 OS and burned them, and they have all worked except one. In that instance, I called the vendor, and of course, they let me download it again. There are tons of free .iso burners. But, if you like 8.1. $300 didn't go down the tube. You updated your computer tremendously, and it will handle anything better even a bad AC. But, I wouldn't jump to AC just yet
Not to continue with my story, but I am trying to give you a reference. I have never had an issue with AC that wasn't a known bug.
So, hang in there and make sure you buy Start8 or Start on 8 or whetever it is called.
Good luck. OK, you can yell at me.