uninstall any anti virus or registry tuner type software.
then try it again.
in fact if you just bought the pc and there isnt much on it your best bet is probably to do a factory reset on it. then before you do anything else with it
upgrade it to windows 8.1
and then do the win 10 upgrade
if you want to speak with the people that sold it to you thats ok with me.
I work for a third party company that answers questions and helps people. This is what we do for a living. We don't sell computers or operating systems.
I don't get anything at all unless you rate my service.
I will be happy to help you and keep helping you until you are happy. But please don't get upset at me for trying to make a living or because you think the people that sold you the computer should have done more.