Why can't my PSP connect to the internet any more?

[Wigglyamps]

Any help gratefully recieved on this one, I have a wifi connection at home (SKY Netgear box) from which I connect my desktop, laptop and until recently my PSP, nothing has changed, the desktop and the laptop still connect with no problem but now the PSP times out saying unable to find the IP address. I have tried manually entering the IP address (ipconfig/all), connecting automatically, standing on one leg etc. The PSP can see the network when you first scan but still refuses to connect. It is highly likely I am missing something obvious but for the life of me I can't see it. Thoughts.....????:ugh:

[frostbite]

Could it be your software has 'forgotten' your password? (not unknown).

Try re-entering it.

[spannersatcx]

Make sure the WLAN switch is turned on located on the left of your PSP