So having never programmed any C++ before (or any language since ZX Spectrum BASIC 20 years ago), I had a steep learning curve. All the information is in the Datasheet for the BIOS chip and the NXP. It is quite simple to wire up this header to the mbed NXP. I set about soldering 8 kynar wires to the chips legs and these went to a header that can be plugged into breadboard. This device is very fast, runs on 3.3v, is programmed using C++ and has local 2Mb storage which gets seen as a USB key by other computers. Im sure I could have succeeded with the Arduino, but I know somebody with a mbed NXP LPC1768, and best of all they were not using it. There were a few problems with this such as it runs on 5V signals and the BIOS chip uses 3.3v. I started work using an Arduino Demilanove programmable device. You can buy commercial off the shelf solutions for flashing SPI, but I was doing this on a budget. So now I starting researching methods of communicating directly with the chip.

Luckily I found exactly what big donkey has already described, a Macronix MX25元206E 32megabit SPI flash device in a SOP8 package.

I dismantled the computer to try and find the BIOS chip. After some, well lots of googling, I found this thread that fixed me onto the path of attempting to kill the password by flashing the BIOS chip. I know chips can be flashed, but I have only ever flashed old 27C256 eeproms that my motorcycle ECU uses. However, I contacted them and they said I needed a new motherboard as this computer is out of warranty and they will not help me.

Technically, HP could generate a file from my UUID which when dropped into a USB key root, will break the password protection. I tried all obvious password guesses but no luck. When I got it up and running, I found a password on BIOS. I recently bought a used Probook 4330s with most parts missing and a broken screen. I just want to add some information that might help other hackintoshers. You have provided me with some of the puzzle pieces to overcome a recent laptop problem. Building a CustoMac Hackintosh: Buyer's Guideįirst of all, THANK YOU big donkey for the information you put in this thread.

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