Ok quick question: I got a Windows 7 key I just found which I can use for my upcoming build. Is there a way that I can upgrade it to windows 10 or should I just leave it as it is? Thanks in advance!
Win 7 is the best OS today. If it's x64 and Pro version, you have support until 2021. So, yeah - leave it as it is. You can always get a skin pack and make it look like Win10 with the benefit of Win7 stability.