To reset the BIOS password on an HP ProBook 450 G2, the most reliable official method is contacting HP Support to obtain a customized SMC.bin file. This file is used at boot to clear the password.
HP generally does not provide master passwords or backdoor codes for this business-class model. Official Reset Methods
HP Support Escalation: Contact HP Support and ask to escalate your request for an SMC.bin file specifically for your ProBook 450 G2's serial number.
System Board Replacement: HP's official stance for business PCs with lost BIOS passwords is that the system board must be replaced. Common Alternative (Third-Party) Methods
If HP support is unavailable, users often attempt these non-official methods:
System Disabled Code: Some HP BIOS prompts will show a "System Disabled" code after three incorrect attempts. This 8-digit code (sometimes starting with 'A') can be used with third-party tools like bios-pw.org or biospark.com to generate an unlock key.
CMOS Reset: Removing the CMOS battery for several minutes can sometimes reset settings, though on most ProBooks, this does not clear the administrator password as it is stored in non-volatile memory.
EEPROM Reprogramming: For advanced users, removing the BIOS chip and using a hardware programmer (like the CH341A) to flash a clean BIOS file is a known technical workaround.
These videos demonstrate various ways to approach an HP BIOS password reset, from software tools to advanced hardware modifications: Reset forgotten HP laptop bios password A [12345678] 371K views · 2 years ago YouTube · ToxicNerd
HP ProBook 450 G2 , resetting a BIOS password is more difficult than on older laptops because it is a business-class device designed for high security. Unlike older consumer models,
removing the CMOS battery or shorting jumpers typically will not reset the BIOS password on this machine 1. The Official (HP Support) Method HP officially states that they reset a lost or forgotten BIOS password for business PCs.
If you cannot remember the password, HP's official solution is to replace the system board (motherboard) hp probook 450 g2 bios password reset
, which usually incurs a cost if the device is out of warranty. Verification: You can check your device's status at the HP Product Warranty Check 2. The "System Disabled" Code Method (If applicable)
Some HP ProBooks may generate a recovery code after several failed attempts. Turn on the laptop and tap to enter the BIOS. Enter an incorrect password three times.
Look for a "System Disabled" message and a 5- or 8-digit code (e.g., [ 12345678 ]
If your code starts with an "i" or is very long, this method may not work. For older codes, third-party "BIOS master password" generators found online might help, but use them at your own risk. 3. CMOS Reset (Only for hardware errors, not passwords)
If you are trying to reset the BIOS because of a settings error (rather than a password lock), you can perform a CMOS reset: Turn off the computer. Press and hold the Power button for 25 seconds
Turn the computer back on; if successful, the CMOS will reset and the unit will restart.
4. HP BIOS Configuration Utility (If you have Windows access)
If you still have administrative access to the Windows OS on the machine, you might be able to change BIOS settings using the HP BIOS Configuration Utility (BCU)
. This tool allows you to modify BIOS configurations from within the command prompt, though it usually requires the existing password to change a new one.
Are you currently locked out of the Windows operating system as well, or do you still have access to the desktop? Reset forgotten HP laptop bios password A [12345678] 5 Jul 2023 —
HP ProBook 450 G2 BIOS Password Reset Guide Locking yourself out of your HP ProBook 450 G2 BIOS can be a major roadblock, especially when you need to change boot orders or hardware settings. While HP's official stance is that lost BIOS passwords cannot be reset without a motherboard replacement, several community-tested methods may help you regain access. Method 1: Using a System Disabled Recovery Code To reset the BIOS password on an HP
If your ProBook generates a recovery code after several failed attempts, you might be able to find a backdoor password.
Enter Wrong Passwords: Power on the laptop and enter a random password three times until the "System Disabled" message appears.
Note the Code: Write down the 8-digit code displayed (ignore any prefix letters like 'A').
Generate a Password: On another device, visit sites like bios-pw.org or biospark.com.
Enter the Code: Type the code exactly as shown into the website to generate a potential master password.
Reboot and Unlock: Restart your ProBook, press F10 to enter BIOS, and enter the generated password. Method 2: Contacting HP for an SMC.bin File
For older ProBook models like the 450 G2, HP support previously provided a customized file to reset the BIOS.
Process: You would typically contact the Official HP Support with your serial number and UUID.
Current Availability: Be aware that many users report HP has discontinued this service for older business notebooks, making this method difficult to use today. Method 3: Physical CMOS Reset (Limited Effectiveness)
On many business-class laptops like the ProBook, removing the CMOS battery often resets the system clock but does not clear the password, as it is stored in non-volatile memory. However, it may reset basic hardware settings. Safety First: Power off and unplug the laptop.
Access the Motherboard: Remove the bottom panel and the main battery. Method 1: The "Wrong Password" Master Key Generation
Disconnect RTC Battery: Locate the small coin-cell battery (RTC/CMOS) and unplug it for at least 15–20 seconds. Reassemble: Plug everything back in and test. Method 4: Hardware Reprogramming (Advanced)
If software methods fail, some technicians remove the BIOS chip physically to wipe the password.
Tools Required: A BIOS programmer (like the TL866II Plus) and an SOP8 adapter.
Procedure: This involves desoldering the BIOS chip, reading the data with a programmer, using a utility like RC Unlocker to clear the password field, and reflashing the chip. This is high-risk and should only be performed by professionals. Essential Post-Reset Steps Once you regain access, ensure your system remains stable:
Set a New Password: Navigate to the Security tab in the BIOS to set a password you can remember.
Check Boot Order: Ensure your primary SSD/HDD is at the top of the boot priority list.
Update BIOS: Download the latest firmware from the HP Software and Driver Downloads page to ensure system security. Reset forgotten HP laptop bios password A [12345678]
Resetting the BIOS password on an HP ProBook 450 G2 Go to product viewer dialog for this item.
is more complex than on older consumer laptops because it is a business-class device with enhanced security. Traditional methods like removing the CMOS battery generally do not work for this model. Primary Resolution Methods
This is the most common method for the ProBook series if you can boot the laptop but cannot enter the BIOS.
System Disabled [i 75439234]).Many HP ProBook 450 G2 units shipped with Absolute Computrace (LoJack for laptops). If you see a message like "Computrace: BIOS Protection Mode," resetting the password alone won't help. Computrace is burned into the firmware.
That code is for HP support only. If you are out of warranty, ignore it. It will lock you out for longer periods (up to 6 hours). Wait it out, then use the hardware method.