- Hardware is all on the Hardware Compatibility List. If it isn't, you could run into a problem like this -- but often the problem will show up in other situations, like the initial install of the OS.
- BIOS/Firmware. Make sure that all of the system BIOS and controller card firmware is up-to-date. On older machines this can be especially troublesome.
- Double check you DNS configuration. Run NETDIAG prior to DCPROMO to see if there are any issues with DNS registrations. Check the event log as well. If the problem isn't hardware this is the next best candidate for issues.
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