Problems after re-installing Windows on W520

Hi I'm new to this forum, quite weird as I have been using this W520 for 3 years now...
I've recently re-installed Windows 7 64bit on my W520 and having some small problems.
1. I can't have the mute-mic hotkey to work as the mute hotkey (no light) and nothing on the screen to indicate the hotkeys I just pressed. I've installed the Hotkey Features Integration for Windows 8 (32-bit, 64-bit), 7 (32-bit, 64-bit), Vista (32-bit, 64-bi...
2. I don't know if I was using the Optimus Graphics feature before but I can't find it anywhere (device manager, Nvidia control panel, etc). I'm assuming that I was using the Quadro 1000M all the time as my battery life is not great. How can I know that I have it turned on?

Hello.
You can try out an older version of the Hotkey Integration package, found here
For your graphics setup, you can check it in BIOS, go to Config - Display - Graphics Device, there you can select to either run Integrated or discrete only, and nVidia Optimus for both.
Cheers!
ThinkPad W540 (20BG) - i7-4800MQ/24GB // ThinkPad T440s (20AQ) - i7-4600U/12GB
ThinkPad T440p (20AW) - i7-4800MQ/16GB // ThinkPad Helix (3698-6EU) - i5-3337U/4GB
ThinkPad W520 (4282-W4Q) - i7-2720QM/32GB // ThinkPad T400 (2767-W1C) - P9500/8GB
ThinkPad T61 (7665-CTO) - T7700/4GB // ThinkPad T60p (8741-C2G) - T7400/4GB

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