A computer's BIOS (Basic Input Output System) is firmware residing in the motherboard that executes a set of instructions that direct computer hardware boot-up activities. The BIOS usually includes security features such as the ability to password-protect the computer. If you forget the BIOS password you will need a special password from the computer manufacturer or a specially constructed dongle if the computer is a Toshiba laptop. Construct a special 25-pin dongle to bypass the boot-up BIOS password on Toshiba laptops.
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Things you need
- Male DB25 connector with connector cover
- 10 3-inch jumper wires
- Soldering iron and solder
- Philips screwdriver
Find the pin numbers on the back of a male DB25 connector located next to each pin in small writing. Place the bare copper ends of the jumper wires in the holes of the pins at the back of the DB25 connector according to the pinout below:
Connect pin 1 to pin 5
Connect pin 5 to pin 10
Connect pin 2 to pin 11
Connect pin 3 to pin 17
Connect pin 4 to pin 12
Connect pin 6 to pin 16
Connect pin 7 to pin 13
Connect pin 8 to pin 14
Connect pin 9 to pin 15
Note that pin 5 will be connected to both pin 1 and pin 10.
Heat up a soldering iron. Solder each wire end to the pin where it is positioned to secure the jumper wires in place. Confirm that the solder does not bridge any pins or wires.
Place a DB25 connector cover on the DB25 male connector and snap the cover in place. Secure the connector cover with the screws provided with the cover.
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