One of the reasons I chose this model is the built-in Bluetooth. I had a Bluetooth dongle that I used on my previous Sony VAIO, but the performance was quirky at best.
When I say breaking in, I mean the process whereby you remove all the built-in rubbish that you don't need and add the programs that you do need plus the data from your previous machine. (Yes, yes, I know, if I bought an Apple Macintosh I wouldn't have all this work to do, but that is a bit of us an over-simplification, as any truly honest Mac owner a would acknowledge.)
One of the things that annoys me on any Windows machine these days is the proliferation of icons in the tray in the bottom right-hand corner. In an effort to clean this up on the new machine I apparently removed a control for the Bluetooth radio. Little did I realize how difficult it would be to get my Bluetooth capability back. The past few days I have been experimenting with voice recognition software and was considering using a Bluetooth headset to do my dictation. When I came to mate the Bluetooth headset to my Sony VAIO I kept getting a message that a Bluetooth radio was not turned on. Seeing no switch by which to turn on the Bluetooth radio I was perplexed. I went online to find out if anybody else had this problem.
Isn't it wonderfully comforting to find other people posting messages about a problem? Apparently the Bluetooth radio switch is so non-obvious that some folks had been doubting whether or not their machine actually had Bluetooth installed.

Warning! Every Sony VAIO comes with a host of built-in utility programs which clog up the Start menu. I am in the habit of either removing these from the menu or bunching them all together in their own folder. In the past some of these utilities have turned out to be quite frivolous, however, the one that turns on the Bluetooth radio is quite essential, as there is no hardware switch to do this.

Success in this endeavor is at least rewarded with a cool blue light on the keyboard, just above the mechanical switch that turns on/off the Wi-Fi radio. (I guess that one extra switch for the Bluetooth would have broken the design budget).

Note: as with Bluetooth on other devices, it is a good idea to check your settings whenever you have Bluetooth active. You don't want your notebook to be discovered and access by an unauthorized user.
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