[justbill70130]

I have an Acer Aspire 5100 laptop with an AMD Turion 64 x 2 mobile processor, 1 gig ram, with an Atheros AR5005G wireless network adapter. This system is running Windows XP Media Center and has been working flawlessly on our wireless network for over a month until yesterday.
Suddenly it does not see, and will not connect to our wireless network unless you unplug the A/C power cord. If you let it run on the battery only, it immediately detects and connects to the wireless network. As soon as you plug in the A/C power cord, it disconnects and not longer can detect the network.
Any ideas?

[AND_YOU_ARE]

Some how under the power saving mode it turns off the wifi adapter. In the control panel there is a power icon, open that and you should see the option of what turns off on battery mode on one of the tabs. I cant tell you exactly, because I am at a desktop right now and don't have all the options you do. Just look around, and you should see something there.

[justbill70130]

YES!!!
I just reset the factory default power settings, and it's working fine now.
THANK YOU for your help!!!