|"old NIC shows up in Device Manager (a hidden device) and I can not unstall it. I receive a message that says can not remove because required for boot up (or something like that.)"|
Vagueness doesn't help. You need to quote the exact messages you're getting.
"(a hidden device) "
What do you mean by that?
Does your User profile have full Administrator priviledges?
You can't do some things if you don't have that.
Go to Control Panel - Add/Remove Programs.
If there is a listing for the old network adapter's software, un-install it.
The term CARD is frequently mis-used. It's NOT A CARD if it's built into the mboard!
Was the network adapter on the old computer built into the mboard, or a chipset on a card installed in a slot??
Obviously you must have installed the hard drive that had Windows installed on it that was on the old mboard onto the new mboard, without installing Windows from scratch, or you wouldn't have this problem.
If you haven't already done this, do it! :
You must load the drivers for the new mboard, particularly the main chipset drivers, in order for Windows to have the proper drivers for and information about your mboard hardware, including it's AGP or PCI-E, ACPI, USB 2.0 if it has it, and hard drive controller support. If you have a generic system and have the CD that came with the mboard, all the necessary drivers are on it. If you load drivers from the web, brand name system builders and mboard makers often DO NOT have the main chipset drivers listed in the downloads for your model - in that case you must go to the maker of the main chipset's web site, get the drivers, and load them.