Machine hangs at CC3 login screen

[Greenbeast]

I've got a particular room where the teacher's machine hangs at the CC3 login screen, before anyone gets a chance to type anything.

- It happens with any machine (i've tested 2 of same hardware (non-RM) and a third of differing hardware (RM))
- It doesn't happen the first day, each time i've put a machine in, it works for that day and then upon starting up the next day the problem occurs
- It happens regardless of the name of the machine, the second and following attempts at rebuilding i used different names for the machine in case it was a machine account issue.

Any ideas?
It strikes me as a network issue, but i don't know what would cause it and why only on that network point

[kmount]

If you swap the teacher & a pupil machine's network points does the pupil machine break?

[bossman]

Greenbeast:

It looks like a faulty NIC and this in turn is closing the port down on the switch, how do I know? We have had the same problem with a workstation doing exactly the same. Re-enable the port on the switch and change the NIC in the workstation and that should solve your problem.

[Greenbeast]

Greenbeast:

It looks like a faulty NIC and this in turn is closing the port down on the switch, how do I know? We have had the same problem with a workstation doing exactly the same. Re-enable the port on the switch and change the NIC in the workstation and that should solve your problem.

Well given that 3 separate machines have been used in this room, that can't be possible, especially as those machines work fine in my office.

I will take a look at the port on the switch though

[CHR1S]

If not the nic then the port or wiring? Something is causing the switch port to crap out. Can you run a patch cable from the port to the PC to remove them from the equation?