View the Last Activity of your PC

It collects almost all sorts of system activity including start up, shutdown, file modification(includes the file you've recently saved in windows), system crashes, actions done by windows installer, system restore point creations etc.

LastActivityView is a tool for Windows operating system that collects information from various sources on a running system, and displays a log of actions made by the user and events occurred on this computer. 
The activity displayed by LastActivityView includes Running .exe file, Opening open/save dialog-box, Opening file/folder from Explorer or other software, software installation, system shutdown/start, application or system crash, network connection/disconnection.

Download HERE