finding unknown password

Apr 21, 2005 3 Replies

Hi All:



Maybe an impossible task, but worth asking about. I bought a computer at a hamfest and discovered that it needs a password. The screen comes up SONY with F3 for setup, Esc. for something else, etc. F3 gets me to a screen asking for password. Guessing gives me two more chances and then disables the system.



I need the help of someone who has had similar problem. Can't contact the person I bought it from since I did not get his name. Duh! George



depending on the Operating System you might be SOL.

-- Best Regards, Daniel Sofie Electronics Supply & Repair

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Hi,

If its a system or bios password on a Sony Vaio laptop then it is quite difficult, the password is held in a EEPROM on the mother board and this is unaffected if the backup battery or main battery is disconnected.

I worked out my passowrd after reading this:

formatting link

You'll need to:

1) locate the EEPROM and buy another one from the internet, then solder it to the motherboard.

2) Hook up another computer with an I2C capable EEPROM programmer and read the contents of the EEPROM, a convienent place to connect to the I2C bus (more correctly SM Bus) is on the EEPROM located on one of the SODIMM modules. You will need to work out the base address of the eeprom mine was not 0x57 mentioned on the website.

Good luck

Philip

1)....

OR

2)...

There are companies that will sell you an EEPROM that has no password, you dont need to program it as well.

Philip

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