So we had some problems at work with PC’s not wanting to PXE boot, they just stopped right before the pxe boot..
The problem was discovered to be with the DHCP settings we had added “Option 43” for our HP Wireless Accesspoints to be able to find the management server – but somehow this confused some client PC’s… Tried to add option 66+67 to resolve it, but this was not enough – option 43 had to go before client pc’s could PXE boot again.. We have an idea though that it is not all models that have this problem seeing that we had a number of sites that had no problem with the option 43.