According to dozens of forum users at Notebookreview.com, apparently owners of the new Sony VAIO F Series VPCF112FX/B, VPCF11JFX/B, VPCF11MFX/B and VPCF1190X CTO are experiencing an odd high pitched whine or buzzing sound (aka whining) while using the laptop. The issue caused several consumers to call Sony for support, but they were unable to provide a fix over the phone – this led to several of the laptops being returned, exchanged, and so forth. However, after observing the forum topic it seems that the problem resides within the microphone built into the laptop itself, and with a few simple clicks this issue can be temporarily resolved. Hopefully Sony will provide a more cohesive fix soon.
Go to “Start,” then “Control Panel,” and then click on the “Hardware & Sound” category. Then click on the “Sound” category, and then click on the “Recording” tab. Highlight the microphone and go to Properties. Select the “Listen” tab and “Mute” the mic as well as put a check mark where it says “Listen to this device.” That should fix everything. When you want to use the mic or webcam, just undo these settings.