Figure out which process has a file or folder open and locked.Figure out which process is running an open window.Figure out which process has loaded a DLL file.

Can add multiple tray icons to monitor CPU, Disk, GPU, Network, and more.Can be used to replace Task Manager, which is especially useful on XP, Vista, and Windows 7.Very accurate CPU usage tracking for processes.The default tree view shows the hierarchical parent relationship between processes, and displays using colors to easily understand processes at a glance.This application has many features, and many of those are buried deep within the interface. Some of the better features include the following, although this is by no means an exhaustive list. It’s the defacto standard for dealing with troubleshooting processes. Process Explorer, a task manager and system monitor application, has been around since 2001, and while it used to even work on Windows 9x, the modern versions only support XP and above, and they’ve been continually updated with features for modern versions of Windows. Wrapping Up and Using the Tools Together.Analyzing and Managing Your Files, Folders, and Drives.Using PsTools to Control Other PCs from the Command Line.Using BgInfo to Display System Information on the Desktop.Using Autoruns to Deal with Startup Processes and Malware.Using Process Monitor to Troubleshoot and Find Registry Hacks.Using Process Explorer to Troubleshoot and Diagnose.What Are the SysInternals Tools and How Do You Use Them?.

Windows sysinternals