Since the last time i m having a problem and cant do lot of stuff i wanna do. (Unknown Error 0x80240017 when i try to install Microsoft C++ 2015 v86) As far as i know, i need to upgrade the Windows to solve this problem but i dont have a key...So how can i activate my Windows or fix this problem on any other way? Do i have to get a CD and than burn Windows 7/8 on it and than install the Windows totalyl new to my PC? How would this procedure go and is there a guide for it? Or is it possible to crack and get a Key? Since i m new and just a beginner i m asking for help here and would really appreciate it if someone could give a helpfull answer!