"Error allocating I/O BAR for PCI device" when booting Windows 7

Possible Duplicate:
Error allocating Mem BAR for PCI Device 0X/00/0.

I have a Dell Optiplex 380. When I try to boot Windows 7 normally I get the following after the Windows loading screen:

*** Hardware Malfuncion

Call your hardware vendor for support

NMI: Parity Check / Memory Parity Error

*** The system has halted ***

When I boot in recovery mode I get the following:

Status: 0xc000000e

Info: The boot selection failed because a required device is inaccessible.

Finally when boot from a CD, for a few seconds the screen displays this:

03/00/0: Error allocating I/O BAR for PCI device
03/00/0: Error allocating I/O BAR for PCI device

I'm hoping for more insight into the meaning of that final "I/O BAR" error. Anybody know what it means?

As answered once before on SuperUser, the Dell documentation tells you the procedure for troubleshooting expansion cards.