Where did you purchase the mosfets?
Aliexpress, I know ;o) but fakes are every where even at mouser, but until now all have been working from ali... Maybe your mosfets name are different, but I doubt.
No physical damage to them, but the ux303ln was water damaged and it was obviously around the mosfets. The only problem I have now, is that a tiny smd capacitor between the mosfets was shorted and destroyed and I can`t find a schematic there shows its value...but maybe I should make a another thread in here with that problem and hope somebody know ;o)
The ux303ln works fine with charger, but wouldn`t charge the battery and these qm3024m are in the battery charging area...
I have repair another Asus laptops, also deaths ones and often the problem have been the first mosfet after the jack in dc line. The culprit is, that they often is placed on the backside of the motherboard...
Mine mosfet was shorted inside(connection from drain to source) and the 2 black mosfets are placed here(the red areas are the 2 shorted components) and I used a hot air solder station, with 6mm nozzleto unsolder and solder:
[image|1409282]