I have three models of laptop which PXE boot, load PE to a point, then reboot themselves just after the "Preparing Network Connections" screen is shown. I pulled in the latest NIC drivers for these models and updated the boot image, but that didn't help. Also turned the HDD drivers from AHCI to compatibility mode in case it was that.
I get just enough time before it reboots to get a command prompt and see it get an address and I can ping the DC / DNS server. Any ideas what to look at or where it might be logged?
Added - I have 11 other models of laptop and desktop building ok from the same environment.