My computer has been running really slow for the past month and I've tried a lot of different steps to attempt to fix it. As a last resort I used Dban to wipe the hardrive clean. After it was done I restarted my computer and I attempted to boot off of my windows 8.1 CD. After bios it went to the windows 10 loading screen and froze, without dots. I have a copy of windows 7, 8.1, 10, and Linux on CDs and it doesn't matter which one I put in to boot off of, it always gets stuck at the windows 10 loading screen. I am not sure what to do.