I have had an interesting bout with my DSL modem (Actiontec GT701-WG) that I got close to resolving but not quite. Ignoring all the intermediate details, I upgraded the firmware to the latest version and that got the hardware to appear normal again: I have steady power, DSL, wireless, and internet lights on the box. If I plug in an Ethernet cable, the hardwired connection works fine.
On my two computers (Windows XP and Windows Vista), both see my DSL modem as a wireless network but neither can make a successful connection to it. Note that I have both WPA enabled and MAC-address filtering enabled for security. (I can connect wirelessly to a nearby, unsecured wifi network.)
The DSL provider has suggested to try turning off security, or to try renaming the network. I will try those but before I do I was hoping to check some log on the computer that might actually indicate what the problem is (e.g. "bad WPA key", "invalid network name", or something of that sort).
Is there any default logging for wireless connections (or connections in general) and where do I find it? Or how do I enable it?