It happens more often than you’d think – access to the bios of your laptop is locked & you’ve forgotten the damn password. All you remember is entering a really clever new password at the time. Sigh As is the case with many electronic devices, a locked bios will often provide an ID that – with enough clever reverse engineering – will reveal the tricky password that you entered then promptly forgot. (Note to self: Do not play with bios whilst drunk) All you need is to know the algorithm used to calculate the password. Which 99% of us do not know.

After usually 3-5 attempts at the password, the laptop will respond with something similar to “This laptop ABCD12345-ZYX is locked. Restart to enter the correct password.” It’s that laptop ID that leads us to the password, eventually. Fortunately, Megabyte @1024kb.co.nz has a pre-built solution for many (but not all) laptop bios locks. Covering HP, Dell. Sony, Toshiba, Fujitsu, BenQ, Asus, Acer and more, it’s worth giving it a try. Especially since it’s & it’s free to use.

If you have a problem with a locked bios, obtain the machine ID mentioned above then go. Enter the ID, press the button, profit. The response will ID the brand of laptop and provide your password. NB: This is a bios code generator, not UEFI. There’s a difference, I don’t have the keys to any UEFI code.

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You can download the free, small program ctbios15.zip from the german. The following Master passwords may be work only on very old Mainboards. BIOS Password Recovery for Laptops. Quick and easy way to recover BIOS passwords on laptops. Enter your code.

• Software Description • Ongoing Research Project • Additional Resources Like any reasonably developed system, HDD and BIOS systems on laptops/notebooks need enormous protection. Systems that are using password generators in order to protect their security are using different algorithms.

Algorithms can vary based on their difficulty level. Current generation laptops require good password generators in order to make their systems as safe as possible. Majority of all laptops are using master passwords (which are unique in each laptop) in order to protect their systems. In order to penetrate the BIOS system one should find a way to disable BIOS passwords. Sometimes it can be very important for the laptop users to know the master passwords of their laptops. However the algorithms to figure out the password are not available to every user.

When a laptop is locked with password, a checksum of that password is stored in FlashROM - this is a chip on the mainboard of the device which also contains the BIOS code and other settings, e.g. Memory timings. For most brands, this checksum is displayed after entering an invalid password for the third time. The dramatic 'System Disabled' message is just scare tactics: when you remove all power from the laptop and reboot it, it will work just as before. From such a checksum (also called 'hash'), valid passwords can be found by means of brute-forcing.

The bypass mechanisms of other vendors work by showing a number to the user from which a master password can be derived. This password is usually a sequence of numbers generated randomly. This software generates and calculates the Master Passwords of HDD and BIOS systems of ACER, Dell and Sony VAIO laptops according to their license numbers. The program takes the license numbers of those laptops(which are unique for every laptop) as an input and gives themaster codes of HDD and BIOS as an output. The algorithm was figured out by multiple testing and collecting data from different Internet sources. This software has been written. To try the beta version of the application you can download Password Recovert Tool 1.0.exe file from this repo.