Danniboo

My partner's 2004 350gt skyline won't start we just started it to move it into the shed then we went to turn it on again and now it won't start we have lights coming on and everything but won't crank all it does is buzz We have tried the starter motor it's not that Check fusses not that And we have checked the battery not that And also check fuel pump it's not that This has just happend out of no where it hasn't done this before and it's our daily