So I bought a laptop a few months back, and all was good. But one day I had to watch a movie for school and I decided I would watch it on my Laptop. It said I needed some media player to run a movie, which I needed to pay or something (wasn't sure) so I googled it and said I could get it for free if I entered this serial key, which I did. But after installing the software or whatever it did, It kept saying that the windows was not genuine (or similar) and I need to to activate windows. It pops up randomly in a blue screen and is really, really annoying when trying to work. I did some further googling on how to solve it, but after following the steps to deactivate the popup message, the box to uncheck it was greyed out, meaning I couldn't disable it. Do I need to fork out money to reinstall Windows, and If I do have to, would I lose all my data on my Laptop? I could back it up, but I'd have to pay further for an external hard-drive which I don't have the money for. Any way just to get rid of the blue popup screen or fix this would be an absolute legend! Thanks for the help in advance.