XP system power-on password setting technique

Background: There is a lot of ways to open or enter your own computer, but it is much easier to use. This example also has a cracking method, but it is intended to provide ideas and may have surprising effects.

Principle: "Blind Eye Method"--Use the Choice command (waiting for a character to enter) and the Echo command (display error message) for encryption purposes. Programming: Open or create Autoexec.bat with Notepad and enter the following: @echo oFF echo non-system disk or disk error choice /c:#/n Use: "non-system disk or disk error" is displayed when booting, causing "Crash", others will be shocked. If you are booting yourself, you can easily enter "#" (equivalent to the power-on password, do not enter the quotation marks, the same below) to let the computer continue to run until you enter the desktop. Frighten illegal visitors Background: If you think the above example is not enough, you can try this program. Principle: Use the Echo command to display 80 "_" (80 underscores) per line and then use the Goto command to set an infinite loop program to achieve the "screen splash" effect. Programming: Open Notepad to create a new C:\\Windows\\winstart.bat, enter the following @echo off :abc echo_ //"_" is an underscore in English, please enter 80 "_" to achieve the effect. Goto abc Use: When someone opens the computer, they will think that the display is "broken" or has a virus to achieve the purpose of scaring off illegal visitors. Temporarily keep up with the method: press Ctrl+Break and press Y. Completely remove the method of keeping up: press F8 to enter Dos, delete the C:\\WINDOWS\\winstart.bat file to recover.