Any Vista user is likely to recognize with fear the green progress bar that sometimes appears across the top of Windows Explorer. If it's there for more than a few seconds, that could mean Explorer has crashed. Regardless, you're stuck waiting as long as a minute for a simple Explorer window to become usable. To reset Explorer without restarting Windows, press 'Ctrl-Shift-Esc', choose the 'Processes' tab, and click the 'Image Name' column header to sort the list. Select each instance of 'Explorer.exe' in the list and click 'End Process' to close it. Now, from Task Manager's File menu, select 'New Task', type 'explorer.exe' and click 'OK' to restore your Desktop.