The first method: Find the CMOS jumper on the motherboard and clear the BIOS
If the boss, take out the battery, and then the positive and negative terminals short connection
The second is more complicated:
How do I clear the bios password
1: Discharge on the COME.
2: Switch to MS-DOS mode, run Debug, and then you can make the following two changes:
1)
调试
-o702e (enter)
-o7100 (press enter)
-o702f (enter)
-o7100 (press enter)
q
Restart, you can enter the CMOS to make changes.
2)
调试
-o7016(press enter)
-o7116(press enter)
q
Restart, the computer will prompt CMOS setting error, press DEL to enter the CMOSSETUP found
Some parameters are set to default values. After the parameters are reset, save the disk and exit the BIOS Settings.
Once the computer forgets the BIOS password, it will not be able to access the BIOS Settings, but we can try the following method to solve it.
(1) You can first try the common password, such as AMIBIOS common password is \"AMI\
(2) If your computer can start, but can not enter the BIOS Settings, you can use the following methods, but note that if you do not understand the following operations, do not try, honest and practical method in (3) it: The BIOS Settings of your computer can be accessed and changed through both 70H and 71H ports, and the easiest way is to clear them all, that is, to become the default Settings. However, there is a condition that the computer can perform the following operations under the premise that it has been started.
The following program segment can complete the CMOS clearing work for all computers:
For clearing AWard:
-o7023
-o7134
q
q
For AMI:
-o7016-o7010
-o7116 or -o710
For phonenix:
-o70ff
-o7117
q
other
-o7010-o7017
-o71ff or -o7117
Now, boot up your computer and enter the BIOS to do some of its own Settings. There are a few motherboards that may not work this way.
(3) This method is certain to be successful, the disadvantage is that the chassis must be opened. After opening the chassis, find the jumper to clear the CMOS content on the motherboard (refer to the motherboard manual), short it for three to five seconds and then boot, the CMOS content will be cleared to the factory Settings, be careful not to short-circuit the jumper has been plugged in the above, so you will not be able to set BIOS.
ASCII big method
If you do not want to download software, do not want to open the chassis, and do not want to change the hardware configuration, the following methods are believed to help you crack and restore the BIOS password:
1. Enter the MS-DOS environment, type EDIT at the DOS prompt and press enter (if you find an error pressing EDIT, you don't have the edit.com file, see the next method), and type:
Alt 179alt 55alt 136
Alt 216alt 230
TOTAL 112TOTAL 176TOTAL 32
Alt 230alt 113
Alt 254alt 195alt 128
Alt 251alt 64
Alt 117alt 241alt 195
2. This method can be done directly in the MS-DOS environment, in the MS-DOS environment input:
COPYCONCMOS.COM
Then press enter and continue typing:
ALT 176ALT 17ALT 230qALT 176ALT 230qALT 205<空格>
Then press \"F6\
Hello, the motherboard BIOS password is generally saved in the EEPROM chip, there are three common cracking methods:
1. Use master password. Each brand of motherboard has a preset master password, which can be obtained through online search.
2. Using CMOS clear jumper, clear BIOS Settings and reset the password by removing the battery from the motherboard and changing the jumper.
3. Reset the BIOS chip. This method is troublesome and requires tools and knowledge such as an external programmer and BIOS chip pin diagram.
Among them, the first method is the most simple and effective, but you need to know the corresponding master password to use.