Unfortunately I don't have an oscilloscope to measure the frequency. I tested it with a simple multimeter and compared to the other crystal on the board. In the diode scale it didn't show any value. The other crystal (the good one) gave me a response. So I think it might be the reason. But as you said, it might be a vran issue and if it's the case I'll have to send it to a real technician. I'm just a curious guy messing around with solders and components. ?