DEAR SWITCH OFF THE MAIN ANY BACK UP ALSO NOW OPEN UP THE COVER OR YOU CPU IN DELL IT IS VERY EASY BUT IN IBM YOU SHOULD HAVE A LITTLE BIT PROBLEM( AS I HAVE) NOW YOU WILL SEE A CELL A BIG CELL LIKE IN A WRIST WATCH BUT LARGE IN SIZE . SEARCH IT INSIDE THE CPU'S MAIN BOARD. PUT IT OUT NOW PUT IT AGAIN AFTER A MINUTE OR TWO. NOT SWITCH THE CPU( BY GIVING IT THE MAIN) NOW ENTER THE SETUP AS IT HAD LOST ALL ITS SETTINGS NOT MAY SETTINGS AS NECESSARY. BUT PLEASE FIRST OF ALL MAKE A LIST OF SETTINGS FROM ANOTHER COMPUTER OF SAME MODEL (MOTHERBOARD) AND COMPANY.OTHER WISE YOU WILL SCREW IT UP THANKX
Just remove the battery from the motherboard for 5 minutes that should erase all the BIOS settings including the password and restore it to factory defaults
Remove a small coin sized CMOS battery to store all BIOS settings along with the password. To reset the password, unplug the PC, open the cabinet and remove the CMOS battery for approx. 15-30 minutes and then put it back. It'll reset all BIOS settings as well as the password and you'll need to re-enter all settings. Under the keyboard or bottom of laptop - If you are working on a laptop computerthe location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment. If it fails, then try to remove the battery for at least one hour. click start control panel Open User Accounts in Control Panel. On the Users tab, click the name of the user whose password you want to change, and then click Reset Password. In New password and Confirm new password, type the new password, and then click OK. Notes You can change passwords only for local computer accounts, such as guest, administrator, or accounts you create for your computer. You cannot change your network logon password in User Accounts. To change your own password, press CTRL ALT DELETE and then click Change Password
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hope this helps
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