Need help to reset my Dell Inspiron N4110 Bios Password

You'll need to place a call to Dell support.  Be prepared with your ownership details -- and a credit card, as there will be a charge for the support call.

i did call the support in Singapore and he replied but still they gave me the wrong password. He don't mentioned about the charges but seems they're taking too long in solving the problem.

Has the mainboard ever been changed in the system?  Did you purchase it new, or used?

Its all stock bought it brand new.  I provided all the necessary proof of purchase documents but seems till now no response from them. He gave me a code but didn't work.

You'll need to call back -- if the mainboard is original but the code didn't work, something else is wrong.  If the system is out of warranty, you no doubt had to pay for the call - so make a return call and explain the situation.

Mr. Emir Ezzad Sabri gave me a second code. After trying it several times, it give me another error which I guess is giving me hint that something will happen terribly if I will not make it right this time. Please check attached screenshots.

I hope anybody can help me solve it this time.