Synopsis: The mechanics of BIOS password locks present in current generation laptops are briefly outlined. Trivial mechanisms have been put in place by most vendors to bypass such passwords, rendering the protection void. A set of master password generators and hands-on instructions are given to disable BIOS passwords.
When a laptop is locked with password, a checksum of that password is stored to a so-called FlashROM - this is a chip on the mainboard of the device which also contains the BIOS code and other settings, e.g. memory timings.
Re: Dell bios / hdd master password generator + Others @ Dentist The link doesn't work to for the Phoenix BIOS master password Generator. Can you possibly send me reset directions for Dell inspiron N1440 Service Tag#: 1YS4QQ1.
- Restart the computer. It works on most versions of the AWARD BIOS. Accessing information on the hard disk When you turn on the host machine, enter the CMOS setup menu (usually you have to press F2, or DEL, or CTRL+ALT+S during the boot sequence) and go to STANDARD CMOS SETUP, and set the channel to which you have put the hard disk as TYPE=Auto, MODE=AUTO, then SAVE & EXIT SETUP.
- Re: Dell bios / hdd master password generator. Phoenix BIOS master password Generator.and this one is for Phoenix Bios'. Navya Serial Video Songs Download. Thank you for this download - I was able to use it successfully - the family I was able to assist is. Take that date & enter it in the BIOS Master Password Generator below.
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.
Bios Master Password Generator Hp
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.
Some vendors resort to storing the password in plain text onto the FlashROM, and instead of printing out just a checksum, an encrypted version of the password is shown.
Other vendors just derive the master password from the serial number. Either way, my scripts can be used to get valid passwords.
A few vendors have implemented obfuscation measures to hide the hash from the end user - for instance, some FSI laptops require you to enter three special passwords for the hash to show up (e.g. '3hqgo3 jqw534 0qww294e', 'enable master password' shifted one up/left on the keyboard). Some HP/Compaq laptops only show the hash if the F2 or F12 key has been pressed prior to entering an invalid password for the last time.
Depending on the 'format' of the number code/hash (e.g. whether only numbers or both numbers and letters are used, whether it contains dashes, etc.), you need to choose the right script - it is mostly just a matter of trying all of them and finding the one that fits your laptop. It does not matter on what machine the script are executed, i.e. there is no reason to run them on the locked laptop.
This is an overview of the algorithms that I looked at so far:
| Vendor | Hash Encoding | Example of Hash Code/Serial | Scripts |
|---|---|---|---|
| Asus | Machine Date | 01-01-2011 | pwgen-asus.py |
| Compaq | 5 decimal digits | 12345 | pwgen-5dec.py Windows binary |
| Dell | serial number | 1234567-595B 1234567-D35B 1234567-2A7B | bios-pw.org |
| Fujitsu-Siemens | 5 decimal digits | 12345 | pwgen-5dec.py Windows binary |
| Fujitsu-Siemens | 8 hexadecimal digits | DEADBEEF | pwgen-fsi-hex.py Windows binary |
| Fujitsu-Siemens | 5x4 hexadecimal digits | AAAA-BBBB-CCCC-DEAD-BEEF | |
| Fujitsu-Siemens | 5x4 decimal digits | 1234-4321-1234-4321-1234 | pwgen-fsi-5x4dec.py Windows binary |
| Fujitsu-Siemens | 6x4 decimal digits | 8F16-1234-4321-1234-4321-1234 | pwgen-fsi-6x4dec.py |
| Hewlett-Packard | 5 decimal digits | 12345 | pwgen-5dec.py Windows binary |
| Hewlett-Packard/Compaq Netbooks | 10 characters | CNU1234ABC | pwgen-hpmini.py Windows binary |
| Insyde H20 (generic) | 8 decimal digits | 03133610 | pwgen-insyde.py Windows binary |
| Phoenix (generic) | 5 decimal digits | 12345 | pwgen-5dec.py Windows binary |
| Sony | 4x4 hexadecimal digits | 1234-1234-1234-1234 | pwgen-sony-4x4.py |
| Sony | 7 digit serial number | 1234567 | pwgen-sony-serial.py Windows binary |
| Samsung | 12 hexadecimal digits | 07088120410C0000 | pwgen-samsung.py Windows binary |
Here are some other folks' efforts (python/ocaml/javascript):
| Vendor | Hash Encoding | Example of Hash Code/Serial | Scripts |
|---|---|---|---|
| HP | 8 decimal digits | i1234578 | https://gist.github.com/Rdp3389 |
| Acer/Insyde | 10 decimal digits | 123457890 | https://github.com/let-def/insydious |
The .NET runtime libraries are required for running the Windows binary files (extension .exe). If the binary files (.exe) don't work out for you, install Python 2.7 (not 3.x) and run the .py script directly by double-clicking them. Make sure that you correctly read each letter (e.g. number '1' vs letter 'l').Вячеслав Бачериков has also converted my scripts to javascript so you can calculate the passwords with your browser: http://bios-pw.org/ (sources).
Please leave a comment below on what make/model the scripts work. Also, be aware that some vendors use different schemes for master passwords that require hardware to be reset - among them are e.g. IBM/Lenovo. If you find that your laptop does not display a hash or the scripts do not work for you for whatever reason, try to:
- use a USB keyboard for entering the password for avoiding potential defects of the built-in keyboard,
- run CmosPwd to remove the password if you can still boot the machine,
- overwrite the BIOS using the emergency recovery procedures. Usually, the emergency flash code is activated by pressing a certain key combination while powering on the machine. You also need a specially prepared USB memory stick containing the BIOS binary. The details are very much dependent on your particular model. Also, be aware that this can potentially brick your device and should only be done as a last measure.
- Some dell service tags are missing the suffix - just try the passwords for all suffices by adding -595B, -2A7B and -D35B to your service tags.
- The passwords for some HP laptops are breakable with this script.
- Unlocking methods for some Toshiba laptops are described here (edit: gone).
- Some older laptop models have service manuals that specify a location of a jumper / solder bridge that can be set for removing the password.
If none of the generators/methods above works, please use the vendor support. Please understand that my motivation for reverse-engineering comes purely from a personal interest. I will not accept offers to look at the specifics of certain models.
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Those manufacturers listed above – your BIOS is brake. All your password are belong to us. (Well, nearly all.)
8-digit & I+8-digit BIOS provided by Insyde H20 (Lenovo, HP) and 5-digit Phoenix BIOS are also pwnd by the Laptop BIOS Master Password Generator.
Seen this before? Bios-locked & password lost, that’s what that screen indicates. But the System Disabled code displayed can often be decrypted to reveal the BIOS password. (The BIOS Master Password for this 2020 model HP Spectre x360 is 45670218 )
When you open a laptop & find yourself faced with the immediate black BIOS password screen & absolutely no idea of what password you used, all you gotta do is come to the Laptop BIOS Master Password Generator @ 1024kb.co.nz.
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Hints & Tips
Individual brands have quirks specific to that manufacturer. Check your brand below - there may be secret sauce that enables your BIOS to crack.
In the case of Asus laptops it's the date code you require - enter an incorrect password then press Alt +R at the next prompt. Take that date & enter it in the BIOS Master Password Generator below in the same order (yyyy-dd-mm, mm-dd-yyyy or dd-mm-yyyy) as displayed on your Asus laptop.
NB: Use the hyphen key '-' as the date separator, not '/'. Like this: dd-mm-yyyy, not dd/mm/yyyy.
If your Asus doesn't display a date code on Alt +R boot, there are 2 touchpoints by your RAM slots. Google for your machine's exact location & short them with a paper clip or tweezers - ka-ching! No more BIOS password.
Dell use 3 minor inconveniences to defend their BIOS security. Without following their protocol, even correct BIOS Master Passwords will fail.
1. Use a USB QWERTY keyboad.
2. When entering an Uppercase character use Caps Lock, NOT Shift.
3. Press & hold the left Ctrl key when entering the password in Dell laptops, then hit Enter twice.
Some Dell service tags are missing a suffix – first try the password generated, then try the passwords for all suffices by adding either -595B, -2A7B, -D35B, -1F66, -6FF1 or -BF97 to your service tag.
Downgrading the BIOS can change your suffix, resulting in a successful password generation. If your BIOS is set to allow downgrades, this method will help.
-8FC8 & -E7A8 suffix are based on an entirely new method. BIOS Master Passwords are available after PayPal donation to support further research.
Newer FSi laptops (2019 +) use a different algorithm which requires the paid solution available at BIOS Passmaster.
Many earlier Elitebook & Probook models on BIOS version lower than F60 are vulnerable to the Mazzif tool available from our downloads page. Full instructions included, be sure to read fully beforehand.
Newer HP BIOS Master Passwords with i or I prefixing 8 hexadecimal characters are successfully generated by the BIOS Master Password Generator. A+ 8 hexadecimal is available at BIOS Passmaster.
If your Lenovo laptop has an Insyde H20 BIOS, then your secret sauce is to use a USB qwerty keyboard when entering the master password generated here. Forget your built-in laptop keyboard, use a USB qwerty keyboard.
Many Lenovo laptops do not use a Master Password system. These laptops require BIOS file rewrite.
Sony & Vaio brand 4 x 4 Challenge Codes are a one-time password, generated fresh each boot.
Do not turn the laptop off after obtaining the Challenge Code as the BIOS Master Password is specific to that code. Restarting before the password is entered will require a new Master Password.
Sony 7-digit Master Passwords are successfully provided by the BIOS Master Password Generator
Phoenix Bios Password Generator
Anyway, whichever BIOS-locked laptop you have, grab the Machine ID Code - sometimes called the Service Tag, Challenge Code or Response Code - usually displayed after submitting a few (3-5) incorrect codes - that’s the unique identifier we need.
Have you read the Hints & Tips for your manufacturer above? Now is a good time to do this.
Pay special attention when reading the code, be careful not to confuse lower L with upper i (l or I), zero & upper o (O or 0) - if your input is not exact, the response will not be correct & your laptop will not open.
Now enter that carefully-copied challenge code into the box below then hit the Crack It button.... Ka-ching!!
No surveys to fill out, no pop-under pR0n adverts, just pure goodness & quite likely your Laptop BIOS Master Password too.
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