I have a Lenovo Thinkpad T450s laptop with a touch screen and maxed memory. I cannot get this device to use the PXE Boot (IPv4) link to the corporate image on the network. I repeatedly get the error message that says "Secured Access". I cannot boot the laptop any other way. The USB startup device is recognized but ignore during the F12 startup. I recognize the NIC(s) are working (to a degree). Wireless and LAN Ethernet are recognized but ignored during startup. I build a number of standard T450s laptop using the PXE Boot without issue. This touch screen model is something unique. Is there a way around this problem?