I've not had to do this, but I see there's a method to reset the BIOS on the M710q which you could try if there's something analogous on the M720q and report back here.Does anyone know if it is easy to unlock/reflash a bios on these? I got a m720q for a steal on ebay, but most options are locked out in bios (like uefi etc), and I don't have either the bios or windows pw.