Tech Support Forum - View Single Post - P4C800-E PCI-CSA bridge not recognized

**clintfan** · 03-06-2005, 09:03 PM

OK P4C800 series has the i875P chip. That chip does have an extra CSA port on it. But only some of the models use it.

It seems a little odd that the only indication yours is a P4C800-E Deluxe is some little sticker. Let's figure out if that's true. You're going to have to look at the chips on the board. Here we go...

Under the AGP slot along the back edge of the board you may find a chip about 3/4 inch square. If this says Intel 82547Ei then you have the P4C800-E Deluxe; no need to look further.
If you don't have that Intel chip, then look down at the lower right corner of the board. If you have only 2 SATA ports (SATA1 & SATA2) and only 2 IDE ports (PRI_IDE & SEC_IDE) you have the "straight" P4C800.
If you have 4 SATA ports and 3 IDE ports (PRI_IDE, SEC_IDE & PRI_RAID) then it is probably the P4C800 Deluxe (non-"E"). If you have 4 IDE ports, let me know.

If indeed you have the P4C800-E Deluxe, then why doesn't the onboard LAN work?...
I assume you have enabled the Onboard LAN in the BIOS as described last time. As 111 said you do also need to install the Intel LAN driver for XinXP... actually I should mention there is a different driver for each OS, so be sure to download the right one. Have you installed this?

If the driver won't go on, it could be a Northbridge CSA issue as you suspect. I really can't explain the missing CSA device. All I can suggest is to maybe try the "Scan for hardware changes" in DeviceManager. There really should be a "257B" device in the list but you didn't mention seeing one. The only other idea I have is to try running the EXE version of the Intel Chipset Software Installation Utility, and see if it detects the missing item. You could also try uninstalling all the Intel 828xx devices, then let them get rediscovered... I'd try to take a backup first, though. You could also try wiping the HDD and doing a complete reinstall. I suppose there's a chance that only the CSA connection from the Northbridge is bad, in which case you need to get the mobo repaired.

If the driver goes on but the onboard LAN still doesn't work, it could be a network software configuration issue, and that's a lot of work do debug over a forum. I'll stop here and let you replay with what mobo you've got, and how far you've gotten with the driver...

-clintfan

03-06-2005, 09:03 PM	#6 (permalink)
clintfan Guru Join Date: Sep 2003 Location: Silicon Valley, CA Posts: 2,655 OS: XP Pro	OK P4C800 series has the i875P chip. That chip does have an extra CSA port on it. But only some of the models use it. It seems a little odd that the only indication yours is a P4C800-E Deluxe is some little sticker. Let's figure out if that's true. You're going to have to look at the chips on the board. Here we go... Under the AGP slot along the back edge of the board you may find a chip about 3/4 inch square. If this says Intel 82547Ei then you have the P4C800-E Deluxe; no need to look further. If you don't have that Intel chip, then look down at the lower right corner of the board. If you have only 2 SATA ports (SATA1 & SATA2) and only 2 IDE ports (PRI_IDE & SEC_IDE) you have the "straight" P4C800. If you have 4 SATA ports and 3 IDE ports (PRI_IDE, SEC_IDE & PRI_RAID) then it is probably the P4C800 Deluxe (non-"E"). If you have 4 IDE ports, let me know. If indeed you have the P4C800-E Deluxe, then why doesn't the onboard LAN work?... I assume you have enabled the Onboard LAN in the BIOS as described last time. As 111 said you do also need to install the Intel LAN driver for XinXP... actually I should mention there is a different driver for each OS, so be sure to download the right one. Have you installed this? If the driver won't go on, it could be a Northbridge CSA issue as you suspect. I really can't explain the missing CSA device. All I can suggest is to maybe try the "Scan for hardware changes" in DeviceManager. There really should be a "257B" device in the list but you didn't mention seeing one. The only other idea I have is to try running the EXE version of the Intel Chipset Software Installation Utility, and see if it detects the missing item. You could also try uninstalling all the Intel 828xx devices, then let them get rediscovered... I'd try to take a backup first, though. You could also try wiping the HDD and doing a complete reinstall. I suppose there's a chance that only the CSA connection from the Northbridge is bad, in which case you need to get the mobo repaired. If the driver goes on but the onboard LAN still doesn't work, it could be a network software configuration issue, and that's a lot of work do debug over a forum. I'll stop here and let you replay with what mobo you've got, and how far you've gotten with the driver... -clintfan Last edited by clintfan; 03-06-2005 at 09:06 PM.