vs-community-edition

I have Visual Studio Community Edition 2015 installed on my drive D:. I recently got a 1TB SSD for my C: drive and wanted to move VS to that drive. Long story shortened; it was a nightmare. Although I could uninstall VS, I could not get it to reinstall in any other location except for D:. After three days of trying, I gave up and reinstalled back to D:. I still could not get it to install correctly and some things are "damaged". Updates, etc. do not completely succeed because of the "damaged" module installation. I do not want to risk running the "Repair" option in the control panel again

I have a project created on Visual Studio 2010. When I try to run the project on Visual Studio 2015 Community edition I get the error below, Severity Code Description Project File Line Error MSB8020 The build tools for Visual Studio 2010 (Platform Toolset = 'v100') cannot be found. To build using the v100 build tools, please install Visual Studio 2010 build tools. Alternatively, you may upgrade to the current Visual Studio tools by selecting the Project menu or right-click the solution, and then selecting "Retarget solution". graphics C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140