This is actually the preparatory section where My spouse and i describe some things about the chip, CMOS, property and service tags, and passwords; so that you will have a good grasp of the big picture.
Hopefully it will also clear up whatever you have gotten a vague idea about on another website.
All pcs have special chips included that store information about the computer. http://www.bios-chip24.com
Some of them are created with everlasting information that are unable to be changed (and, as a rule, all have exactly the same information on them; thus not for passwords. ) These kinds of contain information about the computer model or are part of its efficient circuitry.
A different sort of chip (the kind our company is interested in) is created with a blank information area that can be programmed or filled up with information. These poker chips are generally used to store settings and passwords; and come in 2 basic sorts: VOLATILE and NON-VOLATILE.
VOLATILE chips use a source of electricity to help these groups keep their information, for instance a battery pack. They are less expensive and are being used to store computer settings, and also passwords of all pcs. If one of these chips has a security password upon it, the battery can be removed after a time (between 2 moments to 30 minutes, depending on chip) the password will be erased.
NON-VOLATILE potato chips don’t need electricity to keep their information, but are more expensive. If you have a password on one of such chips, it can be removed from power for years and still have the password on it. (However this does not show that it is long term. ) Remember that the information on Non-Volatile potato chips can be filled up with information. This information can even be altered or erased.
If you have check out this far you probably own a Dell or similar laptop with a pass word that is actually stored in a Non-Volatile processor chip, or are an worker of a company that makes one. These notebook computers have almost all of their environment information stored in Risky (inexpensive) chips, and their passwords are stored on a tiny Non-Volatile (more expensive) chip.
The computer chip that Dell uses is called a 24C02 nick.
This is the Processor chip Type number used to refer to the chip’s design in the gadgets industry.
The 24C02 is a small, rather common surface mount* dip* nick with 8 leads (or legs), which costs about $5. It measures 4. 5 mm long times 3. 5 mm vast x 2 mm large, and stores 256 Octet (or one quarter of any Kilobyte) of information. That is widely used in modems, DIMM Memory, and other electronic devices; and a different condition it can be used in many wallet size “smart cards. ” 5. SURFACE MOUNT means that the chip is soldered onto the surface of the printed circuit, rather than having pins sticking through the board. This can be a most difficult type of circuitry to solder by hands.
* DIP means ‘Dual Inline Package’. This means that the chip has 2 rows of leads (or legs) in direct lines running down their sides.
That’s the processor chip we will be working with, or read the “Some unnecessary information about the chip. ” section later on.
The laptop that was used in this demonstration is a Model 630 type PPX. Other laptops may be different from one shown in the full malfunction demonstration photos.
If a certain laptop does not correspond to some of these layouts, more information might be seen on the web, or, anyone not reading for informational purposes only – could choose to simply “Wing it. inches
Likewise, the chip containing the password may maintain a different location on some motherboards, but it should be capable of being found by reading the numbers on the top of the chip, although a magnifying glass might be necessary.
Now we could informed and ready to begin. Anyone attempting this procedure should have the implements they may think needful or useful.
That they may also wish to write down the Support Tag number for later use, as it will be erased.