Okay, so my friend Jonny upgraded my computer to Windows 10 recently. Then today I went to download WinMugen. I got on the mugen fighters guild to download it. I did it as a guest. It said I had another 11 seconds until i can download it.Then I logged into my account. I tried downloading again. A Blue screen appeared. I guessed I must have had a full hard drive, but I had 64.5 gigs on my computer. I thought "Maybe, it was just a glitch." Yeah, this is what I thought.
My PC folder: