Press Windows Key 
+I Click Change PC settings
+I Click Change PC settings
Click on Search and Apps
Click Search
Click Clear Under Search History
Click Clear to Delete all the search Histor
How to Turn Off Bing Search in Windows 8.1
Click on toggle Button under Get search suggestions and web results from Bing to Turn OFF Bing Search
great post ! ur post is really helpfull ........Call@ 0800-098-8569 for Windows Support number.window help number>
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