You can check this by troubleshooting your system in a Clean Boot ... If File Explorer is not highlighting the selected files, some of your system image files might have been corrupted. Windows ...

The File Explorer in Windows ... (Because of a Windows limitation, it can't be used when you're uploading files in the browser, but it can be the default file manager all everywhere else.) ...

HP laptops shipped with Windows 7... How to Copy Windows From One Hard Drive to Another Hard Drive. Copying files and folders... The Boot Manager menu ... download a disk image of the software ...