unplug the power, Open the computer, take out the CMOS battery, short the battery connector terminals together for 10 seconds, put the battery back in, close the computer.
When you restart the computer, and the password window appears, just hit enter.
My adminpassword was forgeten.I haven't any bootable CD or others. I want it know manualy or other. But guest account have not pass word. I can it used for further information. pls help me..........
Don't fall for a wild goose-chase!, don't take your machine apart, do not remove anything, do not short out anything. Windows manages it's own passwords, NOT the BIOS.
Start Windows in Safe Mode. (Press the F8 key repeatedly during initial startup of the computer)
After what may seem like an eternity, the Welcome screen may appear showing your account and the built-in Administrator account, or, a box will appear for you to enter what account you are interested in logging onto. If the box appears, enter Administrator.
Click to use the Administrator account if it showed the Welcome screen. By default, the Built-in Administrator account has no password.
Click to continue on into safe mode when presented with an option to perform and System restore point rollback.
Once inside, go to the Control Panel, User Accounts, and click on your account, click to change the password. Change the password.