MacBookPro suddenly stopped linking to my home network by Wi-Fi.
Without me making any system updates or changes, my MacbookPro today put up the following message
"Another device on the network is using your computer’s IP address (192.168.0.5).
Try connecting again later. If you continue to have problems, change the IP address of this computer or the IP address of the other device. Contact the network administrator if you need more information."
A little later my MacbookPro stopped communicating with the internet and with my printer, both of which it normally does by wi-fi. The internet connection was previously via my small home network which also incorporates an iMac, a Time Capsule, a Canon printer and a router.
When I attempt now to communicate via wi-fi from the MacbookPro I cannot access the internet or my printer. However, the MacbookPro is still able to communicate with the iMac by wi-fi.
The MacbookPro can connect to the internet if I connect it by an ethernet cable to the Time Capsule.
I've tried setting up a new wi-fi connection in Preferences/Network, but can't do so as I don't know what to enter for the IP address and the Subnet Mask. The message under 'Status' in Preferences/Network when I select 'Wi-fi' in left panel is "Wi-Fi has the self-assigned IP address 169.254.85.222 and will not be able to connect to the Internet."
So I still can't use wi-fi to connect to my Home Network, the internet or my printer.
I have reset the Time Capsule, but the problem persists.
The iMac appears to be operating normally. It is connected to the Time Capsule by ethernet cable, as usual.
Any suggestions about what has caused this to happen and how to fix it?
iMac, Mac OS X (10.7.3)