I've tried everything to resolve my intermittent wifi issue. Reset power settings, run with battery, run without battery, remove battery and reset, uninstalled and reinstalled, enabled and disabled wireless adapter, changed radio settings on router, manually input router settings into adapter properties. The wireless switch is on but the light goes off and on as wireless connects and disconnects. Now hooked up via ethernet. I think it is an issue with Vista and my Intel Pro/Wireless3945ABG adapter but as yet have been unable to find a permanent solution. This started happening several months ago out of the blue. Help??? Thank you.