This is a continuation of
I checked the cables, routers (by connecting a laptop) and it works fine.
So I decided that the problem must be the NIC. The current one was a DLINK 530tx (realtek 8139 driver) and I got the same card from office depot (rev E1).
The one difference I noticed between the two cards is that the new one is recognized by the router even when the power is off (the router lights are on. I suspect some power is being drawn as the plug hasnt been pulled. if this is done then the router lights go off)
Even though its the same card, it installs the driver specific to 530 tx.
after a little while browsing I get a hard lockup. On investigating I find that there is no lockup if I disconnect the cable from the router (loopback ping works fine)
But the moment I put the cable back in it locks up hard
I am wondering if this is dhcp related ?
I should mention that I noticed similar lockups with the older card a few times over the past week.
The other PC which is fine is running on a VIA motherboard with a realtek NIC.
Is it some driver issue that interacts with negotiating with the router problem? or is it caused by some XP updates?
Something about the networking hardware/software is causing communication with the router (which is basically a gateway to the cable modem) to go haywire.
Is the solution to get a different NIC? I do recall reading something about dhcpsense