Why does my bluetooth keyboard lose connection after 15 seconds in Windows 7 on my MacBook?

"OK... I found the solution here. Thanks to groblus for saying the magic Google term: ""Power management"".

I've copied the solution from the link above:

Go to Bluetooth Devices (click the Bluetooth notification icon in the dock... err... taskbar) -> Open Settings.

Now click the Hardware tab, select Apple Built-in Bluetooth, and click Properties in the bottom right. A new window should pop up.

Click ""Change settings"" in the lower left (shield icon).

The window closes and a slightly different one opens. Go to the Power Management Tab and uncheck ""Allow the computer to turn off this device to save power."""