Physically clean the mouse, remove the battery and put it again and see if that helps. If you have to press the left click forcefully, there is a possibility of accumulation of dirt on the left mouse ...

You may get an error prompt displaying the error message Microsoft Office cannot open this file because some parts are missing or invalid when you try to open a Word ...

Every file and every program leaves traces in your system: It accesses other files, uses Windows resources, makes entries in the registry, and possibly installs additional software. In the best-case ...