|
Hi Paul,
Try power cycling your ADSL router and any Ethernet switches you have.
Sometimes if a DHCP server in a router comes off the rails it might
be issuing the same IP addresses to more than one device resulting in
a conflict. This can then manifest itself in the PC's not being able to
see each other.
Sometimes you might need to go even further and shut everything.
Bring up the router first, then the switches and then each PC.
|