You can restore your notebook using Recovery Manager. Click on Start button and type recovery in the search box, and select HP Recovery Manager to run recovery from the D drive. From HP recovery manager you can find the option to format the drive.
If you didn't find the HP recovery manager, please Turn on power and press F11 key to run recovery without booting onto Windows (on some models esc key and then F11 key ).
Hope you are satisfied on this solution.
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