In similar circumstance,if this is a home machine, there should be little problem, but if this machine is used in a commercial enviorment and you have many files, the only problem is loading those Files to an external hard drive to save them. Otherwise with a normal use PC, what you want to save is minimal, pictures and stuff. Your programs you can reinstall afterwards. And to rid a PC of HP's program manager and what you call bloatware,do a FORMAT of drive C, that erases everything on that drive, then do a clean boot, load Windows 7. I did not understand your reference to using Windows 8.