Never seen this before but have you gone into the Control Panel and ensured that the controller is responding properly and that Windows recognized it properly?
Cooler Master HAF X Full Tower
ASRock Z97 Extreme4
EVGA GeForce GTX 970 4GB
EVGA SuperNOVA 850W
Intel Core i5-4690K - OC'ed to 4.5GHz
G.SKILL Ripjaws X 8GB DDR3 1600
CORSAIR Hydro H105
Indigo Xtreme 115X-XS Metallic TIM
Windows 7 SP1 64-bit
PCSX2 1.4.0 unless otherwise specified
Is your OS(or pad drivers?) italian? Asse means Axis in english, basically when you set your pad analogs you set Axis +/-X and +/-Y, instead of X/Y they simply have numbers just like other keys, that's normal.