Windows and your apps may be using bandwidth quietly. These built-in settings help you find the drain and take control.

I installed Microsoft's free PC Manager tool to see if a single click could actually make a difference on a sluggish computer.

Joe Supan is a senior writer for CNET covering home technology, broadband, and moving. Prior to joining CNET, Joe led MyMove's moving coverage and reported on broadband policy, the digital divide, and ...

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