Many DELL versions of BIOS have a "backdoor" password to bypass this in MFG or troubleshooting environments. This backdoor password is Dell (or DELL).
Give those a shot.
jlm699
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Salem
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When you removed the CMOS battery how long did you keep it out? Unless you have access to the MoBo itself and could hold the switch down, you probably didn't give enough time for the capacitors to drain. Try leaving the laptop unpowered and without either battery for at least 24 hours.
That might help... Otherwise if you do have access to the MoBo there should be a little button near the CMOS battery somewhere that you can hold to discharge the caps.
jlm699
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The battery only keeps the clock going. All modern Dells have an IC that stores the password. Provided you have proof of purchase, Dell themselves can help you out for free.
Rik from RCE
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Where did rice come from? :)
Rik from RCE
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