Acer Aspire 1522: Under the keyboard, search for switch SW1 on the left of the fan jack, switch the pin 1 to on, turn on the notebook, press F2 and set a new supervisor password, turn off and switch back SW1.
To fill the eeprom with zero or FF, don't forget the reset the cmos. If you don't see the password, you can try With the eeprom programmer, backup your eeprom and run cmospwd /d /l eeprom_backup. You can desolder the eeprom with hot air or you can try to "clip" the eeprom. You can get/buy eeprom programmer in electronic shops or labs, you need another PC to use it. cmospwd /k) and if the password is really stored in an eeprom, you won't be able to boot anymore. You need an eeprom programmer/eeprom reader (electronic device) to retrieve the password.
On laptops, the password is usually stored in an eeprom on the motherboard and not in the cmos. Hints for various manufacturers Unlock code generator To get information about new CmosPwd release or development, subscribe to cmospwd.
CmosPwd is free, it's distributed under GPL
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