DHCP problems - help needed
In one of my schools, I have a 2003 server with about 80 clients, most of which are Windows 7.
Over the last couple of months, we have been seeing issues with computers getting on to the network - there have been more and more cases where computers seem to log on OK - no error messages - but they end up logged on locally. The netbooks have been much more trouble, and it has got to the point where the teachers don't trust them and don't use them as about half of the class can't log on at any one time.
I have investigated and have found that sometimes a computer cannot pick up an IP address from DHCP. But then if the machine is rebooted, it DOES pick up one fine - or maybe it needs rebooting a couple of times but then is fine. I can't really do anything about it as it isn't permanent (and anyway, I dont know what to do!)
Can anyone tell me why this might be happening and what I can do about it?
The DH wants me to free up some time to be with a class logging on to the netbooks so I can see, and fix the issue.