If you have Windows troubles....

If you have Windows troubles, like I did the other day when the Windows 10 Technical Preview refused three times to install itself, and you then are worried about what that might have done to your "previous system being restored", there's help. Have a look at the following window from Command Prompt, which you should run in its Administrator Mode.... It can make sure your operating system's Image has been correctly restored. The SFC (System File Checker) will confirm all that for you, or fix whatever might not be quite right....