I am the technician working in a school with a network of about 60 machines.
The school has recently transferred from an old school into a brand new school. The new school has brand new network switches and connects to a fibre backbone that runs to the town hall.
The school has its own server.
I am currently in the Suite that has 30 brand new Dell Optiplex 755 PC's and they have all been ghosted from a perfect machine that was tested and working correctly before ghosting took place.
The machines are now playing up in a sense that you can be working on a machine, and surfing the internet without any problems, and then it comes up to say 'The network cable has been unplugged'
This only happens on certain machines, and they work fine when they want to, but then the problem reoccurs. Reboots do not affect this problem. The network chipset is 'Intel 82566Dm-2 Gigabit'.
Ive checked the switches but they all seem to be running fine.
Whilst writing this, the network card has come up to say its disabled, then re-enables itself and then connected back to the network, however this happens on top of the network cable unplugged issue.
Any ideas of where i should look for a solution to this problem?