Question about Dell Computers & Internet
There is no such thing as a 'master bios password'. One password, one machine set by the owner or administrator.
You have to strip the computer down to the motherboard and reset.
You can buy the password as shown here for $45
https://www.dell.com/support/Article/us/en/6099/SLN2849857 days ago - Locate the 2-pin password connector (PSWD) on the system board. Remove the 2-pin jumper plug and set the jumper plug aside. Connect your keyboard and mouse, then connect your computer and monitor to electrical outlets and turn them on. After the operating system loads, turn the computer off.
Dell Inspiron 15 3521 Google Search
Posted on Apr 19, 2017
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Posted on Jan 02, 2017
Tips for a great answer:
Each Dell Inspiron has a master password that clears the BIOS password. Call Dell Technical Support at (800)624-9896 to get this number.
Dell Technical Support will request the Service Tag and Express Service Code from the bottom of the Inspiron.
If the current user is not the original Inspiron owner, Dell will transfer the used Inspiron's registration from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.
To transfer a used Dell Inspiron's registration, fill out the Transfer of Ownership form on Dell's web site. See... http://www.tech-faq.com/reset-dell-bios-password.html
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