Hi Marek,
I appreciate the troubleshooting steps and work around to resolve the issue.
Please answer these questions to assist you better.
- Are you able to see RealTek PCIE Card Reader in Device manager?
- Have you installed all pending Windows and RealTek PCIE Card Reader driver updates?
I suggest you to install all pending Windows and RealTek PCIE Card Reader updates and check.
Updates are additions to software that can help prevent or fix problems, improve how your computer works, or enhance your computing experience.
Please refer to the following Wiki article created by Andre Da Costa
on How to: Install and Update drivers in Windows 10.
http://answers.microsoft.com/en-us/insider/wiki/insider_wintp-insider_devices/how-to-install-and-update-drivers-in-windows-10/a97bbbd1-9973-4d66-9a5b-291300006293
Refer: http://www.realtek.com/Downloads/downloadsView.aspx?Langid=1&PNid=15&PFid=25&Level=4&Conn=3&DownTypeID=3&GetDown=false
Do let us know the status of the issue. Thank you.