My laptop wifi connection disables automatically and red cross comes up

Hello
I just bought a new toshiba laptop L850-B211 with win 7 home premium 64 bit and i have noticed that my wifi disables automatically in between and i see a red cross come up on the tower icon....when i click on the tower cross it automatically connects....and
works fine again. But why is it disabling the wifi adapter automatically. this happens in every 30 or 40 mins even when i am surfing the net. Is this a hardware problem or some setting in windows 7 or toshiba power management utility which is causing this
problem. Also to mention i always use my laptop with power cord connected. The model no of wifi adapter is ATHEROS AR9485WB-EG.
Thanks,
Amit T.

Hi,
When trying to connect the Wireless network, please check the “Start the connection automatically” option. Then, when you trying to connect certain Wireless network next time, it should connect
to the Wireless network automatically.
In addition, update the wireless adapter driver to see how it works.
Also, please check this thread:
wireless adaptor disables automatically
Hope this helps.
Vincent Wang
TechNet Community Support

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My laptop wifi connection disables automatically and red cross comes up

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