Today when I was booting up my PC i noticed something. It took like 10-15 minutes for it to boot. I searched the web and found out that you could type "chkdsk/r c:" into the CMD to scan the C drive. It is actually going right now. I probably have to buy another Ssd to use as the C-drive. My question was if I do that, do I have to re-buy Windows 10 again, since I don't have a key for it.