I have a Asus K55a. I am getting ready to sell it and am looking to erase everything but obviously the windows 8. I tried f9 and it eventually stopped and said it's missing the correct partition, and I don't believe it came with discs. I would like a FREE way of either putting a clean install of win8 back on or just removing all the info. Of course there are no backups on here either. Any help? Thank You.