Hi, Apple newbie here. I bought an Imac 5.2 w/Intel Core2Duo from Ebay and when I first plugged it in first time it connected to my home wireless network without a hitch. Powered it off. Next day it worked as well, then after a period of inactivity it went into sleep mode and ever since I haven't had an internet connection. It appears airport extreme self assigns its own IP automatically.
Thanks in advance for anyone that can provide advice!!
Thanks in advance for anyone that can provide advice!!