I have a Lenovo T61 and I have installed Bluetooth drivers off a wireless speakers. Now, i can't select internal speakers off my laptop, sound icon's only display a red signal because not a bluetooth speaker is connected.
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I tried remove Bluetooth drivers, but on restart this were installed again. I download internal sound card's laptop drive on lenovo site, installed it, but not happened.

On bios setting i don't have any option to select audio settings.

Any help ?