Please, before posting a useless answer just for the sake of saying something read the post.
I bought a laptop at a flea market "as is". No returns accepted. While installing the drivers for my printer, I got a message that said something like the OS in which I was attempting to install was not recognized so I realized the windows copy the computer has is not genuine. At the end I was able to install drivers and the printer's all-in-one software.
Will this be giving me trouble trying to install other genuine software to the point that some of them I will definetly not be able to install?
That is the question. Replies such as "just install a genuine copy of windows", "why don't you return the laptop?", "why don't you complain to the person who sold it to you?" do not answer my question.