That service doesnt work all the time, I heard about them from people. It has very limited service tag numbers. I actually found a way around it.............you just reassign the service tag id with a dell program and it wipes out admin passwords. it does nothing for primary passwords, but that wasnt my problem.
An admin password locks the bios screen, but allows use of lappy, just wont allow to change boot sequence, disabled hardware, etc.
A primary password is a nasty that locks the unit to a Dell screen.....it basically says........."YOUR FLUCKED" unless you call us. the dude who has the master password has it for like one specific model machine...XXXXX-D35B Its cheaper to replace the mobo than get the chip and desolder, and resolder it back in...........if you have the dreaded XXXXXX-595B code.
My post was old........my problem solved, but thanks for the info. Oh and yes, dude, I did pull the cmos battery and main battery, I had the unit apart totally, even identified the eeprom chip, but then i found that program that works like a charm..........and it takes two minutes..............even if i didnt find it, theres no way i would cook a motherboard and resolder a chip in....cheaper to buy a ebay one for less than the cost of the chip