T530 Dolby Sound Driver doesn't start

Hi
Everytime I start Windows on my T530 I get an error message from Dolby Advanced Audio that the Dolby sound driver can't be startet and that I have to restart the computer or reinstall the driver.
I reinstalled and restarted several times but it still doesn't work.
Before this problem I had another error message that the hardware and the driver didn't correspond so I downloaded the driver for the T530 from Leonvos homepage. But the new driver doesn't start.
What do I do?
Regards, Rasmus

I tried to reinstall the old driver that came with the system but now I get the error message (same as before I updated to the new driver):
The existing Dolby audio driver version is 7.2.8000.17 and the software application expects the driver version 7.2.7000.7. Install a valid combination of driver and software application.
I'd be thankfull if someone can help me out here.
Kind regards

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Hi, recently i've been getting a messege when starting up my laptop 'unable to start the dolby audio driver. please restart the computer or reinstall driver if problem persists.' i thought nothing much of it at the time but after that, there are so sounds coming out while gaming or playing other media files. please help. i have a lenovo z500 i7 idea pad.
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