We have about 100 computers connected to our network. Lately random computers will get a black screen when the user boots up. If I turn off wifi and disconnect it from the network the computers boot up just fine. I've had it happen mostly on Windows 7 but we do have one Windows 8 machine that is having the same issue.
We have a Windows 2008 domain. I'm guessing it has to do with group policies being applied but I'm not sure how to troubleshoot this issue since all the policies are being applied to everyone and the issue only happens with a small percentage of machines. Any help would be appreciated.