Dell latitude e4300 series bios revision A14 this computer system #27vqq4j-2a7b is protected by a pre boot authentication system. you can not access the data on this computer without proper authentication authenticate using biometric or press to enter password

SOURCE: password on power

u have to reset your bios setup.
open back side of laptop and check on mother bord u find there 1 cmos cell remove it for 15 minutes it from motherbord

Nashirullah Lootfun

• 121 Answers
• Posted on Aug 09, 2009

SOURCE: Dell Latitude error #field **-595B protected

u will need to open the laptop, there on the mainboard u will find a battery, u have to remove the main battery and remove the laptop from current. its a small round battery u have to remove it for some 5secs just to clear the bios memory, then put it back back. the password wont be here. if there is no round battery then u will find a jumper that u have to short it. else remove the hard disk use a USB cable transfer cable to use it on another pc or laptop to recover your information

SOURCE: Dell laptop ... inspiron 6400 System/adminstrator password

I believed this can be resolve by clean the cmos battery. you need to remove the cmos batery from the laptop then power it on then immediately turn it off. then put the battery back to the laptop then power it on keep tapping on f2 to enter setup. please follow the instructions from the link to remove the cmos battery http://tinyurl.com/yb3mhyg

SOURCE: Dell inspiron 1545. Service tag(S/N):

go to biosremoval.com they can help, works for me every time.
my laptop had bios password hard drive password and windows password. which was unlocked using bios removal services from biosremoval.com

SOURCE: dell latitude e6500 cmos password

There are 3 ways to do this but the first requires that you provide proof of ownership to Dell, or it will cost you money via other "service" providers on the web or you can do it yourself - for free. Now, "free" and "easy" are two different things.. but if you can carefully open your notebook without damaging it - here's a couple links from Dell that detail the CMOS battery removal process:

http://support.dell.com/support/edocs/systems/late6500/en/sm/html/coinbatt.htm

and

http://support.dell.com/support/edocs/systems/late6500/en/sm/html/coinbatt.htm

The key is to disconnect the AC power and main battery before dis-assembly and then then disconnect the CMOS battery as shown in the links above. Press and hold the power button for a minute to completely discharge any power in the main board components. When you remove all the power from the PC, the CMOS can not maintain the customized BIOS settings, including any password settings. You have in effect, reset all settings to "Default". Reassemble when done.

The PC will need to have the BIOS settings set again - to your liking upon next boot.

I hope this helps!