You guys helped me a lot when I had problems with my neighbor's laptop. In the end, they decided to buy a new one and so they did....or well they bought an old one. The Laptop runs Win 7 Professional and the seller has erased all his data but left the system without a password, so he did not wipe it for them. To make sure everything is gone they want me to completely reset it and install Win 10 (if that runs). My question is if I just launch Win 10 from the installation file while there is still a Win 7 present, and it updates it or reinstalls it (whatever), is there a way stuff like tracking or logging software could be carried into the new system. Like would the seller have been able to set up something that still lies within the system files and executes some sort of malware when you do critical work like home banking?
And if so, how can I safely remove anything that may be stored on the hard drives like a complete reset?
And, if there is a way to do it, will I still be able to just launch the PC from a boot stick to setup Win 10? Because from my explanation that sounds like you'd have to delete stuff like the Bios as well and I don't know if this is possible or necessary or how this will affect the later installation.
Any help is really appreciated, I don't want to start off an installation now and realize I should have wiped something before.
Thank you all in advance,