To see a full list of your apps, select Start and scroll through the alphabetical list. Some apps are in folders within the app list—like Notepad, which is in the Windows Accessories folder. If you still can't find what you're looking for, try typing the name of the app or program (OneNote, in the following screenshot) into the search box on the taskbar.
To pin your favorite apps to the Start menu or the taskbar, press and hold (or right-click) the app you want to pin. Select Pin to Start to add it to the Start menu, or select More > Pin to taskbar .
Note: If you thought you had an app or program installed but the preceding methods don't show it in your list of apps, it's probably not fully installed. This can happen for a number of reasons. For example, you may not have the necessary drivers on your device for a program you recently downloaded. In this situation, checking Windows Update for available updates might resolve the problem.
It's also possible that your antivirus software has blocked the app's installation. If you suspect this might be the case, temporarily disable your antivirus software while you try to install the app again. (Make sure you turn Real-time protection back on after you've finished installing the app.)