Want to remove password from authentication system of latitude D 610

SOURCE: How do you bypass a system authentication password

Here ya go:
http://www.fixya.com/support/r3656360-dell_portable_computer_bios_hard_drive

SOURCE: unlock bios master boot password

Openthe back of the machine, under the PCMCIA slot, and find the EEPROM with 8 pins.

Short pins 3 and 6 for about 2 seconds after pressing the power button, then it "should"say:

***Manufacturing Mode - Level [1]***

Press Fn-X to return tonormal mode" then when you see this, press F2.

After bioscomes up, press ESC, choose "Save and exit" then reboot.

No more master boot password.


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SOURCE: dell inspiron 1545 has authentication

The aim is to reset the BIOS so that data concerning passwords are cleared out. This is done by moving a jumper on the motherboard.( The biggest challenge is to find it).

Note that: This procedure also resets the BIOS settings. If you have made changes, this manipulation will reset these features to default.

• Step 1: Turn off your PC and unplug the power cable and open your system unit. Touch the chassis of the casing with a metallic object to discharge static electricity.
• Step 2: Check the documentation for your motherboard to locate the position of the jumper, that reset the BIOS. If you don't have any manual, look on your motherboard one of the following tag: CLR BIOS, CLEAR BIOS, CLR CMOS, CLEAR CMOS, RESET BIOS or RESET CMOS. It is usually near the CMOS battery on the motherboard.
• Step 3: Find the jumper on your motherboard reset it. It is usually close to the battery.

• Step 4: Power up and start your PC: the password has disappeared.

SOURCE: dell inspriron 1545 is protected by password

unlock your dell laptop using: biosremoval.com they offer recommended dell bios & master password + their passwor never failed.

SOURCE: This computer system, #hqhd3bs-595b is protected by apassword authentication system you can not access the data on this computer how i remove password

find dell bios password, hard drive password at biosremoval.com
note that bios passwords are different from hard drive password,
bios = unlock dell motherboard HDD = hard drive unlock
some computers may have up to 3 passwords being the last one windows passwords.