I need to reinstall Windows 8.1 to fix a bug where PC Settings fails to open. sfc /scannow, etc. haven't fixed it. Neither has running CheckDisk. When I downloaded the Windows 10 TP and put it on my flash drive, it removed my Windows 8.1 Pro x64 on it. I need a link to redownload the Windows 8.1 Pro x64 iso. to put on a new flash drive.