In HP Pavilion dv4-2014la and HP Pavilion dv6-1238es, it seems that is a problem with a BIOS configuration. Disabling the Card Reader Energy Saving in BIOS makes the JMicron card reader works without booting with a card inserted.
In HP Pavilion dv4-2014la and HP Pavilion dv6-1238es, it seems that is a problem with a BIOS configuration. Disabling the Card Reader Energy Saving in BIOS makes the JMicron card reader works without booting with a card inserted.