If you mean by the internet, click the 'history' tab on the top bar of the computer. Then, scroll down to the very bottom and it should say 'clear history.' This clears the history PERMANENTLY.
You may have found the Clear option to help you clear your history and empty your cache file in your browser's settings, but all these will not protect you. Some files can not be Erased.
For a complete and safe erasing, I would recommend Privacy Eraser
http://how-convert.com/privacy-eraser-pro-erase-internet-history-protect-internet-privacy.html
It cleans up all the tracks of Internet and computer activities. With simply one click, Privacy Eraser Pro allows you to erase internet history, erase browser history, erase address bar history, erase cookies, erase internet cache, autocomplete memory, saved password, index.dat files of your browser, and Window's swap file, temp folders, run history, search history, open/save history, recent documents and more. This will also speed up your computer.
Supports popular Web Browsers such as Internet Explorer & MSN Explorer, Mozilla Firefox, Google Chrome, AOL, Apple Safari and Opera.
Many pc users like it.
You can delete your browser history permanently. This can be done by accessing the window object in java script.
Google search and browser history are accurate. These provide the accurate search history for all.
The browser history is not common to a computer. It is browser specific and can be deleted in browser only.
You can delete your browser history in the settings. The settings tab contains history and option to erase it.
If the browser history has been deleted, you cannot check. The browser is the only place that stores the history and cache.
Go to your internet browser > Menu > More > History > Menu > Clear History.
In internet explorer, click on TOOLS then Internet options then clear history. You may have found the Clear option to help you clear your history and empty your cache file in your browser's settings, but all these will not protect you. Some files can not be Erased. For a complete and safe erasing, I would recommend Privacy Eraser http://how-convert.com/privacy-eraser-pro-erase-internet-history-protect-internet-privacy.html It cleans up all the tracks of Internet and computer activities. With simply one click, Privacy Eraser Pro allows you to erase internet history, erase browser history, erase address bar history, erase cookies, erase internet cache, autocomplete memory, saved password, index.dat files of your browser, and Window's swap file, temp folders, run history, search history, open/save history, recent documents and more. This will also speed up your computer.
ES
If you want to permanently erase your HD (nothing left at all)The follow the steps:Click StartAll programsAccessoriesCommand PromptOnce this is open then enter the following:Erase /:CWARNING THIS WILL ERASE ENTIRE HD DO NOT ENTER IF YOU DO NOT WANT TO LOOSE EVERYTHING!
erase it
Click on the History Tab and then click "Clear History." You may have found the Clear option to help you clear your history and empty your cache file in your browser's settings, but all these will not protect you. Some files can not be erased.
Reinstall the operating system.
Use ErAce from erace.it
There is no way to erase your own history - or that of any other user - on WikiAnswers.
If you are using Firefox, Click on the top were it says "History"(Show all history)Then You will see the History E: Today last week las month if you want to delete all of it just right click on the Day you want to erase and click delete.If you are using IE. Click Favorites. There you will see HistoryIf you're using Chrome Click tools and go to History there you can do what you need to do.Read more: How_do_you_erase_the_history