We reset/unlock bios administrator password and HardDisk password for Dell Inspiron M511R Click the link below to buy the code for unlocking your laptop https://bios-fix.com//index.php?resources/dell-without-any-suffix-unlock-bios-password.85/ Power on your laptop Enter the wrong password three times You will see a screen only with Service Tag We need only service tag (system number) to unlock it for example in the photo below the service tag (system number) is: 6PZ8NR1 FDGD6W1 or Add my skype: [email protected] WhatsApp: +16176147065 Join telegram channel : https://t.me/unlock_bios After payment processing, your master password will be sent immediately (to your email and PayPal email address) In Laptop: enter a calculated password, then push Enter key. We send to you the password and you must type it on password prompt and then the laptop gets unlock