I only know what I read about it yesterday. It's purpose is protection for the BIOS. So if you would get some sort of infection which corrupted the BIOS, the software would restore it for you. If you are a fairly safe browsing person, I don't see that it's needed at all. Most malware or virus that people pickup up simply corrupt their HDD or data, not do low level corruption to something like the BIOS.

In any case, that's just a guess. There could be all sorts of things that have changed depending on how you performed your factory reset. I would start by reviewing the BIOS config to ensure things are configured correctly and stuff that you don't use is disabled. After that, continue down the path of investigating all of the bloatware that is likely running by default on an OEM machine.

 

Just a guess, but I suspect Sure Start was disabled before you performed the factory reset.

 

Okay, would there be any disadvantages if i turned it off?