Latitude c640 Bios password reset, chip jumper

By hankbates ยท 4 replies
Oct 26, 2007
  1. I have a c640 which needs a primary bios password, and it appears to me that with a properly designed jumper wire assembly terminals 3 and 6 of the 24c04 chip can be accessed from the ram cover opening without further disassembly. They appear to be the third pair in. the picture I have from the "dellpass manual" is confusing, as the orientation of the enlarged view of the chip appears to be upside down as compared to the view which locates it. Can anyone who has done it confirm this?
    Thanks for any input...
  2. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    This is not rocket science. If it looks upside down treat it as such
  3. hankbates

    hankbates TS Rookie Topic Starter

    Thanks for your reply. I had decided to do just that, it is good to have it confirmed.
  4. wieng

    wieng TS Rookie

    i have same problem with dell latitude c640 which need a primary bios password, can anyone to help me...
  5. BeachVibes

    BeachVibes TS Rookie

    Latitude c640 bios password

    I'm having the same problem with a c640 I recently purchased, I'm trying to find out where I can get some direction on the shorting the pins method I have the unit broken down so everything is easy to get to but now I need to know what to do any help out there let me know
    Thanx in advance

    Moderator Edit:
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