Windows 7

1.Cut Out The Clutter.
Working on a document in a window and want to get rid of all the extraneous background noise? Simply hit Win+Home to minimize all the non-active background windows, keeping the window you’re using in its current position. When you’re ready, simply press Win+Home again to restore the background windows to their original locations.

2.Pin Your Favorite Folders. 
If you’re always working in the same four or five folders, you can quickly pin them with the Explorer icon on the taskbar. Hold the right-click button down and drag the folder to the taskbar, and it will be automatically pinned in the Explorer Jump List. 

3. Troubleshoot problems
If some part of Windows 7 is behaving strangely, and you don't know why, then click Control Panel > Find and fix problems (or 'Troubleshooting') to access the new troubleshooting packs. These are simple wizards that will resolve common problems, check your settings, clean up your system and more.