Er. Ok. MUST be the chipset. Couldn't be, oh say, a bad:
Video Card.
RAM.
Sound card.
NIC.
Modem.
Hard drive.
Floppy drive.
Power supply.
ATA/66 cable.
Floppy drive cable.
Bad CPU.
Insufficient cooling.
User.
Motherboard != Chipset. Chipset != Motherboard. Motherboard != CPU. CPU != Motherboard. Chipset != CPU. CPU != Chipset. Got it? Good. Understand? Good. Read it again anyway.
You bought.. A Dell P4? I'm guessing it's a Dimension 8100? What a rotten piece of crap. Want to know a fun bug with that system? Dell OEM Logitech USB mouse (black) causes (used to? It's been 6 months now... Maybe they acknowledged the bug I alerted Austin to) Windows to hang on load for 8 MINUTES. Disconnect the mouse, no problem. Replace with a PS/2 mouse, no problem. Plug the USB Logitech back in, problem.
Then there's the Dimension 4100, based on the Intel 815 chipset. Seagate hard drives weren't detected during a cold boot. Dell's answer to this Intel issue? BIOS update that warmboots the system during POST after a cold boot. That's right. The answer to that issue was to have the BIOS reboot.
Then there's the Intel 820+SDRAM fun. Dell didn't face that one, but a lot of others did.
Yeah. Great Intel chipsets and processors. You'd think someone would have TESTED the piles of crap before it went out the door.
I'm not trying to say Intel Bad, AMD Good. I'm just trying to point out both parties have their issues.
Rendus, who had entirely too many dealings with the Dell Dimension line of computers, and Dell internal who denies compatibility issues because Big Daddy Intel tells them there aren't any.