01-25-2019 05:18 PM
Welcome to the HP Support Community @yamill_pecord
For that model you will need to contact HP in your region and they should be able to send you a customized SMC.bin file which you can use at boot to reset the password.
When talking to the HP rep ask them to escalate your service request.
Just to note:
Do not try removing the RTC battery. It will not remove the password, but it will reset the clock - as SMC files are time coded, a large disparity between the system clock and the time encoded in the SMC will cause it to fail.
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