Dell Latitude E5500 won't read any SD Card after reinstall

I had to reinstall Windows 7 on my Latitude E5500.

After the reinstall the computer won't read any SD card inserted in the slot. I tried several cards which work fine on other computers.

I think the problem is a wrong or missing driver, but the machine doesn't show any trouble in the device manager. I tried to reinstall the drivers, without effect.

Does anyone has had a similar experience or any ideas how to solve the problem?

thanks in advance

Fabian