I am looking for Dell OptiPlex 330 minitower LAN card Driver for Inter E4500.

Google images.

Looking at the specifications for the Optiplex 755 line I'm seeing the highest power supply is in the minitower version at 305W. I can't find a document specifying the power requirements for the Radeon x1900, but most benchmark power consumption tests show the system pulls around 280 - 300W with that card installed.
The problem is either your specific Optiplex 755 configuration can't support the power requirements, I don't know if you have the MiniTower, Desktop Tower, Small Form Factor or Ultra Small Form Factor version of the sytem or the card is itself is bad.

Login to what message?

you can go to support.dell.com
or you can visit this link to download the drivers
http://www.dell.com/support/drivers/us/en/19

330 330 660

You can download the driver from here

http://drivers.softpedia.com/get/NETWORK-CARD/OTHER-NETWORK-CARDS/Dell-Optiplex-GX280-Broadcom-LAN-Driver.shtml

My pc lan card is showing connected to LAN but it's not communicate with domain or not open ie also. please give me suggetion.

Here is the Dell site with all the available drivers for your computer:

Optiplex 300 Downloads

You may have to change the Operating System in the drop-down menu.

Thanks for using Fixya.

you need your power supply replaced

I know everyone is not a tech, but, if you will take the cover off and while powered on, look at the large silver looking fins (heat sink) on what is known as the North Bridge chip ane use the BACK of your finger to move slowly and see if there is heat on it, and then the base of the CPU as well, if there is no heat, the motherboard is the likely culprit. I know it seems to be low tech, but it is how I derermined 2 Dell motherboards were bad and have replaced them both with sucess.
Also look at the back of the power supply for a small red switch, make sure the power setting matches your area ... 115V or 240V.
Last resort, look here.
http://www.txcesssurplus.com/servlet/the-1974/Dell-Optiplex-330-MiniTower/Detail