After certain recent Windows updates, Charm Bar > Network (Airplane mode OFF) > at Wifi Off condition, I cannot turn on Wifi again. The Wifi on/off bar did not respond to my click. Acer bluetooth mouse then did not work or could not be detected. The bluetooth mouse led kept blinking. Wifi disconnected. I was forced to roll back Windows system. After that, though wifi connection works, the bluetooth mouse cannot be detected by S7. At Control Penal > Program Features, I cannot uninstall "Qualcomm Atheros WLAN and Bluetooth Client Installation Program".
I felt frustrated with both the wifi and bluetooth issues of S7 and get tired to find ways out for the system.
I now use a wired mouse until future Windows updates or wifi/bluetooth combo driver can improve the stability of the system.
I WILL NOT DO ANY WINDOWS UPDATE OR UPDATE DEVICE DRIVERS UNTIL 2013 IN ORDER TO GET A PEACEFUL X'MAS AND HAPPY NEW YEAR!!