Forgot BIOS Super Administrator password, how to hack?

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I like nothing blind toss, moving hands activity activities bones no harm, not long ago very cheap to get a toy ThinkPad T400 (company substandard goods), the appearance is good, in addition to the power adapter is bad, other parts are good, but the BIOS on the lock, unable to redo the system.

1. Believe that most people will first think of the question Baidu, Baidu experience so to say: How to crack BIOS boot password

> But this premise is able to enter the operating system, or can be started with the system disk, but my ThinkPad T400 has been unable to enter the system. (It doesn't have to work if you do it)

> Like to toss the computer how can not have the tool disk (old peaches is very useful, you can make self-made U disk Startup disk, are fool-like operation), "a key to clear the CMOS password", the results ran long time has not returned, the last computer also lost power.

> Start again, the result is completely blocked by the small lock (such as), even the startup disk is not going to go, enough ruthless enough strong!!!

2. Another common method is to unplug the BIOS battery, the motherboard power

> disassemble the ThinkPad T400 's touchpad lid, and you'll see a button battery with a yellow sheath, unplug the cable (note: To make the motherboard completely power off, the laptop battery and the external power supply will have to be unplugged), wait more than 10 seconds, and then boot check. I tried many times, removed the battery for one night, the next day the boot check, the password still exists.

3. The above two conventional methods have been unable to crack this powerful BIOS super password, to obtain a malicious recruit: " short-circuit security chip SDA and SCL two feet "

> Demolition machine is not complex, and the online easy to find the demolition guide, I have an official ThinkPad Demolition guide, note that the Screw model and location (can be mobile phone photo record, if the machine completed the discovery has left a few small screws, you will be very headache).

> Show me a little toolbox:

> To look at my hero, the key tool to hack the BIOS super password

> Tools are all up, where are the chips? Just look at the next few pictures.

Chip in the back of the motherboard, in fact, do not have to remove all the original can be turned over the motherboard (I was torn to play, but also for cleaning and silica gel), short-circuit chip pin when the need to power on.

Hand grasp the plastic frame to turn the motherboard over, the chip in the red circle position, note the hands do not touch the back of the motherboard those pins.

> chip Foot, 24RF08/P24S08 according to the model 8 feet and 14 feet of two packages, the need to short access to the SCL and SDA.

The physical legend is ThinkPad T400, find NXP chip such as, control chip foot position to find SCL and SDA (6 and 5 red circle).

> Next need to live operation, first determine the memory, hard disk, keyboard, display and other basic components have been installed to be able to boot the status of the motherboard battery is also connected, find personal cooperation (because I do not have a soldering iron to weld short wiring) Put the motherboard up, plug the power adapter, and then boot, When the keyboard light on the instant to the SCL and SDA short , smooth words can be seen at a time or directly into the BIOS, no more than a few times.

> cracked successfully, next reset BIOS password, I choose to put supervisor password to disabled, save the trouble again. Remember to use F10 to exit and save the BIOS changes just now.

> This is done, shut down, how to put it back, pray do not come out of the screw, ^_^

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Forgot BIOS Super Administrator password, how to hack?