So here's the deal. I opened my mbp and it gave me the white screen with the flashing folder with the question mark inside it. After much searching, it turns out that it is either an error in the OS or the HDD has failed. I am currently 2hours away from where my home is (my purchase receipt and my mac software CDs are there). This is complicated by the fact that I don't have an apple store in either of those two cities, but however they do have apple kiosks in best buy (and those are around me). If I can't use my friend's CD to repair the files, will I still be able to take my mbp in to a bestbuy for fixing given that I would still have the product's serial but not the receipt? It is less than a year old and the warranty is still active.