Putting this one to rest- i HAVE LITERALLY NO CLUE why it installed win10 from my USB all of a sudden! I cannot change any boot settings, etc without admin password. So I changed nothing. Cannot change format, anything. I deleted the partitions, created new, formatted- using all same everything. INSTALLED windows! Been trying to do just that for 2 months! So,,,, who knows, who cares. I will get it set up and test it thoroughly and sell it if it passes my tests,lol.