Hi, If you want to remove the system or Bios password then clean the Bios. Reconfigure the motherboard jumper settings. It will remove Bios password. If you want to remove user password then go to the user accounts in control panel open the user by double click and remove the password. If you can't login then login by safe mode in administrator account and do the same as before.
Get online
and got to www.google.com In the google search box type: "Dell
Support" (without the quotes and put your manufacturer name before Support).
Look for downloads and drivers. Enter your model number and operating
system when requested. Look for Manuals and search them for Passwords.
Clearing Forgotten Passwords (the manual shows a picture of this)
1 Remove the computer cover.
2 Locate the 2-pin password jumper (PSWD) on the system board. By
default, Pin1 and Pin2 should be connected. You will need to remove the
jumper and boot the system, as follows.
3 Remove the jumper.
4 Replace the computer cover.
5 Connect your computer and monitor to electrical outlets, and turn them on.
6 After the Microsoft Windows desktop appears on your computer, shut down your computer.
7 Turn off the monitor and disconnect it from the electrical outlet.
8 Disconnect the computer power cable from the electrical outlet, and press the power button to ground the system board.
9 Open the computer cover.
10 Locate the 2-pin password jumper (PSWD) on the system board and
attach the jumper to reenable the password feature.
11 Replace the computer cover.
NOTICE To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
12 Connect your computer and devices to electrical outlets, and turn them on.
NOTE This procedure enables the password feature. When you enter system setup (see "Entering System Setup" on page 79), both system and administrator password options appear as Not Set meaning that the password feature is enabled but no password is assigned.
13 Assign a new system and or administrator password. Replace the computer cover.
NOTICE To connect a network cable, first plug the cable into the network device and then plug it into the computer.
14 Connect your computer and devices to electrical outlets, and turn them on.
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