Copy C:\Grub4dos\grub.exe to the root of your boot drive/device. Boot from the device and wait for the DOS prompt, then type grub.exe [ENTER] to load grub4dos. If using Windows 9x, press the [F8] key to enter the safe mode boot menu and choose option Command prompt only or Safe mode command prompt only, then type grub.exe [ENTER].
Copy C:\Grub4dos\grub.exe to the root of your boot drive/device. Add an entry to config.sys - to add an option to a Windows 98 (SE) boot disk menu, edit config.sys (in a text editor such as notepad) and add the following entries (for changes to original config.sys see here - changes are in red text) -
Phase 5: Re-injecting System Identifiers (DMI Configuration)
HP ProBook 640 G4 BIOS BIN File: Understanding "Cracked" Firmware and Safe Flashing
While holding those keys, press the for 2 to 3 seconds. hp probook 640 g4 bios bin file cracked
Use a tool like to merge your original DMI data (Serial, Keys) and the clean ME region into a working base firmware file. Flash the newly compiled, clean .BIN file back to the chip. Method 3: Official Ownership Disputes
For the vast majority of users, the safest path is the official one: contacting HP support or using their official utility tools. However, for the determined hardware tinkerer with a bricked or password-locked device, understanding the role of BIN files, SPI programmers, and community unlockers is the only way forward. If you choose to proceed, do so with caution, a clear understanding that you are the only one responsible for the outcome, and always verify your BIN file's integrity before flashing. The line between freeing a functional laptop and creating an expensive paperweight has never been thinner. Method 3: Official Ownership Disputes For the vast
Erase the chip and flash the new "unlocked" new_bios.bin file. Alternatives to "Cracked" BIOS
Given the significant risks, security vulnerabilities, and technical complexity of using a cracked BIOS, it's wise to explore safer and more legitimate avenues first. The line between freeing a functional laptop and
When users search for a "cracked BIOS bin file," they are usually trying to solve one of two problems: removing a forgotten Supervisor/Administrator power-on password, or bypassing a locked Absolute/Computrace persistent security state. 1. BIOS Password Removal
The HP ProBook 640 G4 is a reliable business laptop, but like any PC, it can encounter BIOS-related problems – boot failures, forgotten admin passwords, or corrupted firmware. Many online searches for a “cracked BIOS bin file” stem from a desire to bypass these locks. This article explains what a BIOS .bin file is, why cracking it is risky, and how to legally resolve common BIOS issues.
A sample config.sys is included in the Grub4dos download, this can be used to replace config.sys on your boot device - if using the sample file you will be prompted to press the [space] bar to start Grub4dos.
Autoexec.bat can also be used to launch Grub4dos - simply edit the file and add entry grub.exe.
To install grub4dos code to a hard disks MBR via DOS, copy C:\Grub4dos\BOOTLACE.COM to the root of a DOS bootable drive/disk. Now reboot your PC and boot into DOS. If using Windows 9x BOOTLACE.COM can be executed from a dos box (start > run > type command [enter]).
To install Grub4dos code to the MBR of the first hard disk (usually the first hard disk set to boot within the BIOS settings) use command -
To install Grub4dos code to the MBR of the second hard disk use command -
To avoid installing Grub4dos to the wrong disk use a third party tool such as MBRWizD.exe (available here) to check the disk order. Copy MBRWizD.exe to the root of the DOS bootable device and type MBRWizD.exe /List - you should be able to identify the correct disk from the attributes outputted by the command (to install to disk 0 - use command BOOTLACE.COM 0x80; to install to disk 1 - use command BOOTLACE.COM 0x81; etc.). You will also need to copy grldr and menu.lst to the root of a (supported) local drive/disk.
Using the Grubinst package, it is possible to install Grub4dos code to the partition boot sector. Although this feature is documented in bootlace.com, attempting to install to the bootsector (using the command bootlace.com --install-partition=0 0x80) results in the following -
Use instead the DOS version of grubinst tool - at the time of writing this guide the most recent version available is version is grubinst-1.1-bin-dos-2008-01-01 (file name grbins16.exe). Use command syntax grbins16.exe -p=n [device] or grbins16.exe --install-partition=n [device] (where n = partition number, starting from 0 for first partition. e.g. grbins16.exe -p=0 (hd0). If using Windows 9x, run grbins16.exe from a dos box (start > run > type command [enter]).
grldr must be copied to the partition on which the bootsector was installed, and the partition must be active. See here for Grubinst download.