These ones are something different. DELL notebooks save their BIOS password in an EEPROM-chip so it isn’t deleted when you short-circuit the BIOS battery or something like that. Also there’s no jumper/DIP-switch which disables the password. Nevertheless, there are three different ways to get such things fixed: I will describe the second one here. Service… Read More »
This is a short one:
In the newer SONY VAIO Notebooks, the BIOS password is no longer stored in the volatile CMOS-area but on an EEPROM. Jean Delvare has published his results of an analysis of various Sony Vaio EEPROM dumps on his homepage. There you can see that the BIOS password is stored encrypted in the first 7 Bytes… Read More »
This page in English. Da Notebook-Hersteller die Vergesslichkeit von Passwörtern als Problem erkannt haben, ist es oft recht einfach, einvergessenes BIOS-Passwort zu entfernen. Entfernen der Batterie Man trennt das Notebook vom Netz und nimmt den Akku heraus. Danach findet und entfernt man die BIOS-Batterie für ca. eine Minute und setzt sie danach wieder ein. Falls… Read More »
Diese Seite auf Deutsch. Since Notebook-manufacturers know of the problem of forgotten passwords, they often implement easy ways to remove BIOS passwords into their notebooks. Removing the battery Remove AC power and remove the battery. Now find and remove the BIOS battery for about a minute and then reinsert it. If this doesn’t work, try… Read More »