Bluetooth not working on Toshiba Satellite L645 (Ubuntu 12.10)

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http://askubuntu.com – I am using Toshiba Satellite L645 with Ubuntu 12.10 installed in it. Bluetooth icon does not show up on the top task bar. When i try to switch it on from System Settings, the buttons don't work. I have already tried the suggestions under the following titles: Bluetooth dongle always inactive on Toshiba Satellite M645-S4050 [closed] How can I get my Bluetooth adapter working on a Toshiba Satellite m645? They did not solve the problem. (HowTos)