Every time I boot my PC, I have to uninstall, then reinstall the adaptor driver. No other issues...once that's done, everything works fine. I have 2 adaptors (on onboard, one PCI) that both exhibit the exact same problem and solution. I have rolled back the driver for the onboard adaptor, but not the PCI as apparently it has never been updated. I did download and install that latest driver form the manutacturer for the PCI adapter to no avail. I have disabled the onboard adaptor in the BIOS, that too had no effect. Mobo: Asus P4P800c deluxe PCI Adaptor: D-Link DGE-530T Gigabit Ethernet Adaptor (rev.B) Onboard Adaptor: Marvell Yukon 88E8001/8003/8010 PCI Gigabit Ethernet Controller If it were one or the other, then I might think it was a driver/hardware issue. But seeing as it affects both adaptors, I'm guessing it's an OS issue. I've been working onthis issue for more than a week now and I'm at my wits end. Any help would be greatly appreciated. best regards, Blindman

Hi, According to your description, the issue might related with network card driver conflict with other hardware. I suggest to perform these test to troubleshoot the issue: 1 Use one network adapter on your PC (either PCI adapter or Onboard adapter) to see if the same issue occurs. 2 If the same issue occurs, try to logon with Safe Mode with networking and check the result. 3 Update the driver of network adapters, also update BIOS to the latest version. 4 Go to “Computer management”---“Device Manager”, Show hidden devices, and delete the device with yellow exclamatory mark. 5 Try to install Vista drive with Vista Compatible Mode: http://social.technet.microsoft.com/Forums/en-US/w7itprohardware/thread/80cae5ee-dc98-4a2f-8284-a1ab826059b7 Hope that helps. Regards, Leo HuangPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.