On start up always display a chassis warning and after that a box is displayed on screen asking for a password, with the title "Enter Password To Unlock System". I tried a lot password, "admin" and others that may be used by the owner, with no success.
I´m traiyng to clear that pass without success.
bios jumper, and with Intel® Management Engine BIOS Extension jumper, also.
I upgrade the firmware.
remove the battery too.
what else can I do ?
Resetting the password is done from the BIOS' maintenance page. This is activated by moving the BIOS Configuration Jumper from the 1-2 pins to the 2-3 pins (while system is powered off!).
Thank you for your answer on this.
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