NO post when NIC added to Asus MB

I am trying to rebuild a PC for a friend's son....

The MB is ASUS A7V.

Everything works nicely until I add a network card.
I have now tried with 3 different NIC's that works nicely in any other PC.
But when a NIC is present, the machine does not power up. No spinning fans, no beeps, no nothing...

As soon as the NIC is removed it boots up.
I have tried with minimum configuration just HD, RAM, and graphics - even tried to switch the AGP based video to PCI card. Tried different RAM modules too.

I have tried with any combination of PCI slots.

The MB bios has now been updated to the latest available.
I have cleared the CMOS.
I have tried forcing IRQ on the NIC in another machine, and then reserved that IRQ for the used PCI slot on the ASUS MB.... No Luck.

The NIC's I have tried are all PCI and it is 3Com 3905C-TXM, RealTek 8139C and Accton 1207D.

But all to no help.

So in case you have an idea to solve it, please let me hear about it.

Best regards

Jens

 

Hi Jens,

Looking at the motherboard manual (I have an A7V133C), there are several options in the BIOS regarding PCI and networking.
In the Advanced Menu, there is PCI Master Caching, Delayed Transaction and PCI to DRAM Prefetch. You could try disabling each one at a time. These seem to relate to the type of CPU installed (Athlon or Duron) and non-starting is a symptom of a CPU problem.

It talks about ISA devices, yet there are no ISA slots, although there settings dealing with non Plug and Play devices. If there is onboard audio try disabling it in the BIOS settings (or an onboard modem if it has one).

I don't think IRQ (resource settings) should stop it from running unless the conflict may be directly with the CPU.

Matt

 

Hi Mattman.
Thank you for your reply.

I finally found a solution to the problem, which was switch the 3VSBSLT jumper to non-default position. (page 19, in this manual

"ftp://dlsvr02.asus.com/pub/ASUS/mb/socka/kt133/a7v/a7v-104.pdf" ), then I could finally boot.


The manual says about the jumper:
"This jumper allows you to select the voltage supplied to PCI-devices. If you have PCI devices that require auxillary power set this jumper to 3 VSB. "
3 VSB is the default.

So case closed and thank you for your help

Best regards

Jens