Extruder doesn't respond

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Hello, yesterday evening, I printed my last model, this morning I started my A10, and tried to extrude some filament but nothing happened, no sound, nothing.
I connected the x axis cable to the extruder and it worked, I interchanged the Y little card inside (dont know the name) with the extruder one and the Y axis still works.
All the cables seem well connected.
So is it the main card that doesn't work anymore for the extruder ? Can I move the "little card" to a free slot ?

Must I buy a new main card and which one ?

Thanks in advance

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After checking the cable that were good, I installed a new firmware and it works ! I don't really understand how it can have been corrupte but my problem is solved. Thanks anyway.