BIOS working perfectly! Thanks!

Would you have any explanation for the bios that I tried not saving the service tag and not going into manufacturing mode anymore? Also, if you could provide a link or explain how this correction is made, I would be very happy, that way I would be able to learn something more. Thanks again!​...

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I read the rules, sorry if I created a new topic from something existing.
Service tag is 7BQ39D3​...

Hello everybody!
I'm a new member here, I've already gotten a lot of help here on this forum. My name is Israel, I'm 29 years old, Brazilian and my wife and I are expecting our first child. I've been working in the notebook maintenance area for 7 years and I'm getting some servers as well. I took a technical course in electronics, but practically everything I know I learned on my own in forums and doing tests. My knowledge of electronics isn't great, but I can solve things that experienced technicians here in my region can't. I hope I can give some help to some professional colleagues at...

Hey guys.

I need help unlocking this BIOS password. I tried to use other bios, but they go into manufacturing mode because of the service tag and even though I typed the service tag correctly, it doesn't save and it doesn't exit this mode. Any mistakes in English, I apologize because I'm from Brazil. Thank you for the help!
Remembering that even one of the bios, I did Clean ME with the service tag inside and it still didn't save and remained in manufacturing mode.
If there is a topic where you teach how to unlock the password in the bios, I would really appreciate it if...