DELL INSPIRON 2200 THIS COMPUTER SYSTEM, #6TLDX1J-595B, IS PROTECTED BY A PASSWORD AUTHENTICATION SYSTEM

You can request a master password from Dell to reset the BIOS password by calling (800)624-9896. You will need to provide your service tag and express code.

Contact Dell Customer Care they will definetly help you out with system Password as per HDD password concerned you have to install new HDD

312fdx59

hope it helps

Dell Laptop with bios or hard drive password set ? Unlock your dell laptop using the link below if it display a message that says "this computer system is protected by a password authentication system, you cannot access the data on this computer without the primary or administrator password, when you turn on the computer. This message is what you get if the BIOS is protected by a password. or you get system disabled

Go to: http://dell-inspiron-6000-bios-password.biospwd.com to get your dell bios password authentication and get full access to your dell computer, they can unlock almost all dell laptop such as dell inspiron, xps, latitude, precision, studio, vostro

Here is your Dell Hard Disk Master Password for HDD serial #44W4Z3Y3764-595B
Your HDD Master Password is: w2cuzked
When asked for HDD Password use the HDD Master Password to unlock the HDD password. The Dell HDD Master Password is what Dell can calculate for you or a third party.
Thanks to the great guys at unlockbiosrecovery.com for providing the HDD Master Password that will unlock your hard disk. They can unlock your laptop bios or hard disk.

return back to factory settings, i think it's ctrl+F11 as soon as it boots up

here is your answer http://www.fixya.com/support/r3656360-dell_portable_computer_bios_hard_drive

Dell Laptop with bios or hard drive password set ? Unlock your dell laptop using the link below if it display a message that says "this computer system is protected by a password authentication system, you cannot access the data on this computer without the primary or administrator password, when you turn on the computer. This message is what you get if the BIOS is protected by a password. or you get system disabled

Go to: http://dell-inspiron-b130-bios-password.biospwd.com to get your dell bios password authentication and get full access to your dell computer, they can unlock almost all dell laptop such as dell inspiron, xps, latitude, precision, studio, vostro

Password for what?

Operating System?
BIOS?

For BIOS try this Software:
http://www.4shared.com/file/82179383/4262ad3d/DELL_Bios_Pass_Killer_2008_By_Virility.html