Client deployment fails with 0x80004005. Network not found even with correct drivers loaded in boot image!

Hi,

I am trying to deploy W7 x64 SP to a client like i've done a million times. This is a new computer model the Dell Optiplex 9020.

1. It loads the boot images then prepares network and reboots...
   
2. I have checked the smsts.log this gives me:
   Failed to download pxe variable file. Code(0x00000001) TSPxe 27/11/2013 14:27:14 884 (0x0374)
   PxeGetPxeData failed with 0x80004005 TSPxe 27/11/2013 14:27:14 884 (0x0374)
   So this says to me i'm not able to acces the network.
   
3. I have then downloaded the latest network drivers from dell for this computer's internal network card. (Intel I217-LM)
   I added these to my x64 boot image and have redistributed my boot image.
   I retried my first steps but i get the same result.
   
4. I have hit F8 and did an ipconfig but this gives no result so i know i still don't get an ip adres.

Does anybody have any idea on how to proceed?

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