I can't verify right now, of course, but know it's Intel.... Mobile Intel 965 express chipset, or something real close to that. It's part of the mainboard, I believe. Where would you look for that mainboard? Where do I find the part number or model number on the mainboard? I googled a little but didn't find anything my limited knowledge could use.The laptop is out of warranty. Will Dell support talk to me. I didn't find anything about motherboards on Dell.com, as far as model IDs or even replacement boards for sale. Give me a good place to call where the person I talk to can reliably offer the right board. In Little Rock, AR I guess I could take it to GeekSquad but it's higher cost for parts and labor. Maybe I can do it myself if I find a board that comes with what's needed to give it a service tag. If you've wondered why I'd bother with an old. lower-end laptop, it was my son's; a Marine captain killed in Cobra helo crash. My daughter and I can't let it go so we're looking at accepting that it's a money pit.
If anyone else here hasn't given up on anything other than the mainboard, please chime in. We'll appreciate it. Randy