Ok I went to the store again to get my Harddrive back they said they coudn't do anything, but there is still another chance, my dad (which have lot's of knowledge about that stuff too) Said that there is a method to make it work and he wants to try it, so I will go to his house possibly this weekend with my computer and the HD, and I will trade my CPU with a new computer he have that he was planning to sell it which is 3x the power of mine, but he still wants to try to get my files back, so yeah hooray!
But if we can't get my files back then no problem, I can make everything from the ground up, vehicles for example could be a lot better, and videos could be made in 1080p on that new computer and everything runs really smooth on it.