Your wireless router or accesspoint likely uses WPA2 encryption, which the PSP3000 .does not support. It only supports WEP (do not use, extremely weak) and WPA 1.Change your AP's settings so it supports both WPA 1 and WPA 2, or if that is not an option, only WPA 1. Most APs have a setting topreferWPA2, which ought to fall back to WPA1. This option can also be called WPA2 Mixed orsimilar.If it worked in the past and you did notchange anything, it is also possible yourremembered connection settings on the PSP3k have somehow become corrupted. Remove them completely and attempt to reconnect but confirm your AP settings first.If all else fails,temporarilydisable wireless encryption on your AP and connect your PSP3k. This must work, if not, you have an issue either with the AP (test by connecting a laptop or other device to it) or the PSP3K itself. Once connected, re-enable WPA encryption and reconnect.