Hello. I recently bought a HP Pavilion TouchSmart 15-b129wm. It comes with Windows 8, and after updating, and updating, it doesn't give the option to upgrade to Windows 8.1. Is there a way to simply download a bloatware free (preferably Win 8.1 Pro VL or Retail), and retain my OEM activation? Can I also keep my recovery partitions (for warranty purpose) intact if I were to format C: with a fresh copy? Thanks for any info.