BIOS chip number/code

Sure -- if the system is under warranty. If it is not, as with anything else, replacement will be at your expense.

Very rarely - on notebooks - are there jumpers.  And yes, some manufacturers provide such a bypass other ways, which effectively renders the password useless in the first place.

are you employee of Dell?

ok I ill take care of that. Thanks for your assistance .If you know any other  options like jumper let me know...

There is no jumper on the board.  If the master password doesn't work, replace the mainboard.

There's no "code/number".  What are you looking for?

If the system has a password on it you've forgotten, you must call Dell.

I called them 4 times but no use there are not capable of answering me..they dont even know anything about hardware.

What is the problem you're trying to solve?   Is the system registered to you and is it under warranty or out of warranty?

You're not going to find a pre-flashed chip available - you will need to remove the chip, have it flashed externally in an EEPROM writer, and then re-solder it.

If it's just a password issue, call the out of warranty number (yes, there is a charge for the call) and they'll assist you.

support.dell.com/.../expired_warranty

ya the system is registered.It is out of warranty that is the problem the dell customer support not providing proper support for me. Actually I wanna know the chip number so that i can replace the chip manually.

yes am going do that . can u just tell me the chip name/number in the board?

actually already i checked it but i couldn't find it. Can you tell me the location where can I exactly find it?