Incomplete introduction to CMOS password cracking

Comments: 1. Change the hardware configuration when the CMOS password is lost, you can try to change the hardware of the machine before restarting, if the system finds that the new hardware configuration is different from the original hardware configuration at startup, you may need to directly enter CMOS to reset the configuration without a password. The method for changing the hardware configuration is simple: for example, removing a memory stick or installing a CPU of different models (when I change the hardware configuration
When the CMOS password is lost, you can first try to change the hardware of the machine before restarting, because when starting, if the system finds that the new hardware configuration is different from the original hardware configuration, it may be sufficient for you to directly enter the CMOS to reset without a password. The method for changing the hardware configuration is simple: for example, removing a memory stick, installing a CPU of different models (of course, the motherboard must support it), replacing a hard disk, and so on.
2. Create your own password cracking File
A. after the system self-check is complete, press F8 when preparing to Boot Windows, select "Safe mode command prompt only" (Safe command mode), and enter copy con yk at the DOS prompt. COM. Press enter and enter:
ALT 179, ALT 55, ALT 136, ALT 216, ALT 230, ALT 112, ALT 176, ALT 32, ALT 230, ALT 113, ALT 254, ALT 195, ALT 128, ALT, ALT 251, ALT 64, ALT 117, ALT 241, ALT 195, and then save by F6. Note: When you enter the preceding data, press the ALT key, and then press the numeric key in the numeric keyboard (the row above the keyboard does not work, after entering a number, release the ALT key and press ALT to enter the next number ...... During the input process, every time the ALT key is released, a messy character will appear on the screen, so we don't have to worry about it.
After saving and exiting, run YK directly. COM file, there should be no prompt on the screen, and then restart the computer to clear the password in CMOS, of course, other settings in CMOS will also be cleared, this requires us to reset the settings.
B. Select the Security Command mode when starting, enter COPY CON YK. COM, and enter:
ALT 176, ALT 17, ALT 230, p, ALT 176, ALT 20, ALT 230, q, ALT 205, spaces, and press F6 to save the file and restart the computer.
Iii. DEBUG Method
At the DOS prompt, run DEBUG and enter:
-O70 18
-O71 18
-Q
Or
-O70 21
-O71 21
-Q
After exiting the DOS prompt, restart the computer and clear the CMOS Password completely. Note that port 70 and port 71 are two CMOS ports. We can write some error data (such as 20, 16, or 17) to them at will, which will destroy all the settings in CMOS, if you have time, try to use more data.
Iv. Universal Password
If someone sets the security option in COMS as the system, you must enter the correct password each time you start the system. Otherwise, do not enter Windows, and DOS cannot even enter, in this way, we can only rely on the universal password to solve the problem.
Ami bios: AMI; Sysg
Award bios: award; Syxz; h996; wantgirl; eBBB; dirrid.
The above universal password is used to crack the CMOS password on the 386, 486, and Pentium motherboard, and is not so clever for PII or above, there are very few universal passwords that can crack PII and above, and almost never heard of them, but the younger brother found a password-abaubjao, and has successfully cracked the 6ATA4 (PIII), Viagra MVP4 (K6-2), Mercedes-Benz 160A, 160A (PIII) and more than 10 pieces of the motherboard on the CMOS password, do not dare to exclusive, here to everyone.
5. Use tool software
On the Internet, you will find that software that can crack the CMOS password is everywhere. I think Biospwds is the best software. It is a small software made by Germans, you only need to click the "Get passwords" button to display your CMOS password on the screen. In addition, you can see the BIOS version, time, and other information. If you have any requirements, you can download them at http://www.geocities.com/mbockelkamp( or download them from "System Tools" on this site ).
6. Discharge
If you are too lucky to use the above methods to crack the CMOS password, then this is the only way to go. Open the motherboard manual, find the patch cord for clearing the CMOS settings, change the short connection method as described in the Manual, and clear the CMOS. What, your motherboard is too old to have this jumper? Remove the button battery on the motherboard. Why can't I start the machine after discharge? Installing the battery back, stupid!