SD card inserted!

reprapir

Hello.
I use a full graphic smart controller and ramps1.4 , when I switch the printer on it says SD card inserted, while there is no sd card inserted. when I insert an sd card, nothing changes. when I rotate or click the rotary switch it doesn't behave normally, I have to click and hold it for several seconds for a click, and I have to rotate it for several turns to have a step move in the menu. also it doesn't keep moving to the end of the list, only changes between to first menus.

Repetier

Then you have enabled sd detection and it is not working - maybe it needs to be inverted or pin set to -1 for none present. What happens is that it continuously tries to read not existing sd card eating up a lot of cpu power making everything very slow.