I am wondering if, since your system is not supported by Windows 11, there is no correct driver loaded in the system. Remember that the card works fine in the Windows 10 system but not in the Windows 11 unsupported system.
I put an SD card into the onboard SD reader. Nothing. No sound as in my other computer and nothing in the discs list in Device Manager or in file explorer. The SD card works fine in my other Inspiron 14z 5423. Any way to troubleshoot this? Thanks Rick
SD card reader issue