Hey Experts and Gurus,
I am experiencing a rather odd issue in which a Windows 7 desktop computer will halt / freeze before the Ctrl-Alt-Del login prompt. Only a hand full of our desktops do this out ~100 but those few randomly have this happen.
A power off and on seems to fix the problem until it randomly occurs again.
OS - Windows 7 Professional OS
OEM - Dell, Lenovo, and white box (custom builds) - Note mostly happens to Dell and Lenovos
Domain - Yes (2 DCs working together)- running in mix mode to service 2003 and 2008 DCs and servers
Network - 2 main Class C subnets routed between a Sonicwall NSA 2400 - note the issue occurs both inside the network and external. All the cases in the internal network have been on the same subnet as the DC.
Switches - Netgear ProSafe(s) and Cisco(s) - note the users that have this problem are all on different switches
Reviewing the Error log we can see the event with an ID 100, but not much more than that.
I have seen this kind of issue occur before when the machine is looking for the domain controller, which unplugging the ethernet would let the login prompt through, but this has not worked in this case.
Furthermore I have googled quite a bit on the issue which blame too many profiles, but these machines have no more than 5 profiles on them, and occur with as little as 2 profiles. Also we have tried fresh reload of the OS via images, but no success.
Thank you for any help you may be able to give.