(When network administrators protect and use computers, they often encounter various problems of losing passwords. Here, we have prepared some methods for cracking passwords for the vast network administrators, but I hope we don't do bad things. The power-on password is the first thing we will encounter, so we will start with CMOS password cracking. Although CMOS varieties are different, their encryption methods are basically the same. The general cracking method is mainly carried out from two aspects: hard and soft. ?)