remove password from 93c46 chip

[Guest]

Hi.
I have a laptop motherboard locked by an unknown password stored in a security chip.
After my research on the web, looks like i need to play with this chip.
actually, 93c46w6 is the number printed in it.. so i guess it is the 93c46 i should look for? or do the "w6" at the end makes a difference?

I have no clue about eeproms or working with electronic components. Just a basic idea of soldering and understanding a little about programming.

So this is what i think i need to do for what i have learned these last couple of days.

I could get a serial port eeprom programming tool for this chip, (about 20 bucks on ebay).
Then use ponyprog to dump the stuff out of it.
Somehow try to decrypt the password in it, by using an application that will use brute force to do the job, or just delete the "address"?, where the password is stored....

Just in case.. this is a Dell 700m motherboard.

Sorry about my ignorance in the field... but i like learning new stuff and i think that this shouldn't be very hard to do with this chip. I read articles about doing this with IBMs but there is nothing up to date that i could find for Dell.

Any help or info would be much appreciated.

Thanks a lot.

[asmallri]

http://web.archive.org/web/20040429073809/qasimtoep.tripod.com/dell/dell.html
_________________
Regards, Andrew

http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!!

[Guest]

Thank you Andrew but that jumping technique is out of date. It works on old laptops like that pentium 3 in that website. That's why i said i couldn't find anything up to date.
The notebook im dealing with is a 1.6ghz centrino.

[Mark]

Not sure what your question has to do with PIC's or CCS but...

Use the same approach. Try shorting the Data Output or Clock line while powering on the laptop.