My wireless adapter turns off after sitting idle why

My wireless for my alienware m17x adapter does not work correctly.  Reloading windows from the disks, it worked until I started to unload all the drivers for all the computer systems.  Then it was off and wouldn't work at all.  I went out and bought a cisco wireless adapter that I plug into a usb port.  That adapter worked fine, but now whenever I have leave my computer idle for more than a few minutes, wireless connectivity has fallen and I am obliged to do the troubleshooting that takes 3 minutes before it resets and it turns on.  I don't understand why the original does not work as all the diagnostics say that the device is working properly, not why the plug is being extinguished.  Can someone help me.

I am running windows 7 Home premium on a computer laptop alienware m17x.

It is simple go to control panel and in the search bar, type Device Manager   and click on it and go on the network adapters and double click it and make right click above and you may find option 3 or more and do a right-click on each single option one by one. the first right click on it and go to Properties and go in power management and disable the option says: allow the computer to disable the device of

Save. do it to all the other options but have not an option the option says allow the computer... , don't worry about this and they all would be well :D

Tags: Windows

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