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I used a "PC Mover"-type software to copy from my old desktop to my new Windows 8.1 PC. It didn't work well and left the new PC a mess, almost unusable. So I want to restore back to the way the PC was when it arrived. I have both the Windows 8.1 disk that came with my PC as well as a USB flash drive on which I created (I think) an image copy. But nothing I've tried to do the restore is working. Here's what's happening.
I hit Shift-Restart to bring up a screen that allows me to "Troubleshoot". If I choose that option I get a screen with an option to "Reset Your PC". But when I select that my screen just goes black and the computer just appears to sit there. If I select the option that says "Use a Device" it shows me a few options including the Sandisk USB flash drive on which I created my image copy. But when I select that option the same thing happens as when I do the "Troubleshooting" option - the screen turns black and the computer just sits there. Finally, when I put the Windows 8.1 disk in the disk drive and start my PC it ignores the disk and just boots normally.
Also, I wanted to get into BIOS to change the boot order so it would boot from the flash drive but it appears that the old F2 doesn't work in Windows 8.1. I've got my OS on an SSD and the PC boots from screen off to the startup screen in about 10 seconds. There's no intermediate screen where I know it's time to hit F2.
I might add I'm no techie, obviously, so if you offer advice can you spell it out so a relative beginner can follow your advice. Thanks. Oh, and I might add that I'm perfectly OK deleting all files I've added since the PC arrived and just going back to how it was when I unboxed it.