Latitude D610 PC Notebook: I am looking for the Dell Latitude D610 serial Num...

Have you tried here: ftp://ftp.dell.com/Pages/Drivers/latitude-d610.html

Go to the following link and enter you service tag (serial number):
http://www.dell.com/support/home/us/en/19?c=us&s=dhs&cs=19&l=en This will bring up the original configuration of that model.
Here is another link to driver downloads for your model:
http://www.dell.com/support/drivers/us/en/19/Product/latitude-d630

Always use the Dell or Windows updates first. Try here: http://www.dell.com/support/drivers/us/en/04/Product/latitude-d610

t s64nds 352e the number lock is on. To remove it look for a key with 'Num Lock' on and press it. You may need to press the function (Fn or Func - depending on which laptop you have). The key is usually located at the top right hand side of the keyboard.

Go to "DeviceManager" and look if any yellow or red alerts are being displayed next to any device. Double click on that device and a window will pop opentelling you about the error. You can access the "Device Manager" bygoing to the 'Control Panel", "Administrative Tools", "ComputerManagement" and select "Device Manager" located in the left sidecolumn, (assumption - laptop has Windows XP). If you need drivers, go to www.support.dell.com andselect "I'm looking for drivers and downloads". If you don't have theproper version of Adobe you will be prompted to install it. Once installedreturn to "drivers and downloads" and enter the "service tag",(serial number) of the computer. Dell keeps a listing of drivers for everycustomer's computer they sell.

Take out battery don´t work on Dell Laptops.
I got my Dell Bios & HDD Master Pasword within a few minutes from http://www.bios-password.kickme.to/

press num lock again

This link might help: http://support.dell.com/support/edocs/systems/latd610/en/sm_en/sysboard.htm#wp1000473

I did a check and the D600 series I am pretty sure is not capable of running Windows 7. Re install the original OS or a Linux and go to the Windows 7 RC page and run the compatibility tool.

Dell Latitude D610 User's Guide
Dell Latitude D610 Service Manual