Turn on the laptop and immediately press the F11 key repeatedly until System Recovery starts. On the Choose an option screen, click “Troubleshoot.” Click “Reset this PC.” Click either “Keep my files” or “Remove everything” depending on which you prefer.
How do I master reset my HP laptop?
Remove the battery from the computer. With the battery and power cord unplugged, press and hold the Power button for approximately 15 seconds. After you drain the capacitors, re-insert the battery, and then plug in the power cord. Leave peripheral devices disconnected.
