The secretary at our company recently had an issue with her computer not connecting to our network/internet.  I traced it to either a bad Ethernet port on the motherboard or some other fault related to that.  I purchased the Broadcom NetXtreme 10/100/1000 Mbps Gigabit Network Card PCI-E SFF for DELL from NewEgg after looking at the specs for my computer and seeing that as a valid replacement.  

I installed the drivers and hooked everything up fine and it all worked.  The next day, now I'm getting my boot screen, then it goes black and I see a 1 3 4 on the tower of my PC.  After some research, I found that I needed to reset my CMOS/BIOS settings.  I did that and after a restart, it boots up perfectly.  I shut down the machine to confirm that it will reboot and be fixed still.  Only to find that when I reboot, I get the same problem!  I'm so confused.  I know the card isn't bad, because it works when I reset the BIOS.  Why would it only work the first time after resetting the BIOS?  HELP!!!!

Side note:  If I remove the new network card and start my machine, it works perfectly, I just cannot access my network or the internet because the on board Ethernet port is not working. 

Thanks!