Do you encounter that some PC require password to start the PC? That call bios password, which is set at the bios.
Once you enter the password, the bios’s “startup manager“(a program in bios) will call windows from hard disk to your memory, then only your company can be start. Without bios, your computer are unable to start.
There are not hard to bypass or remove the bios password, as the video below show how you can DIY.
There are another kind of method that I always use, which have a bit different with the video, I am looking for the jumper behind the battery, just behind it. I pick out the jumper, then power on the CPU, the power will start for few second and off back automatically. Once it shutdown it self, put back the jumper and start the PC again… The password clear 🙂