Just to add a bit of information:
D54250WYK manufactured mid 2014 still had this headless issue. Then, I updated the BIOS, drivers, and everything worked fine after that, as it can now boot Win8.1 Pro without a screen connected.
Just to add a bit of information:
D54250WYK manufactured mid 2014 still had this headless issue. Then, I updated the BIOS, drivers, and everything worked fine after that, as it can now boot Win8.1 Pro without a screen connected.