I'm trying to install Win7 OS on a Lenovo E335 with no DVD/CD. I'm doing it over PXE/Network using Serva. Although I am able to get passed Serva's installation menu, ServaPENet fails at the booting client when "Loading Network Resources" giving:


This is the only log on the Serva Client PC and nothing on the Serva-server side. I would appreciate if someone can tell me how to get past this error. The network card works fine; it has already loaded the Windows PE installation structure on a X: drive on the new laptop.

Another detail: I am using a normal Ethernet Cable to connect the PCs. Should this be enough, or is a crossover cable mandatory in this case?

1 Answer 1


If you got to see ServaPENet on your screen saying


then your Ethernet cables are OK; at that moment all the TFTP transfers were correctly done.

The error you mention says the The windoesPE (boot.wim) of the OS you are trying to install does not have the correct drivers for your Lenovo. The official Serva's how-to clearly says how to solve this problem at 8.3.2- WDS OS OEM network drivers


also you can see here the same procedure on a Lenovo


  • Thx. Actually I realized that there were instructions on how to solve that problem at Serva. Still had some problems with the Serva/PXE. Gave up on windows 7 installation over NET since there were problems with the user-access and installed Windows 8 instead via USB (Windows 8 has drivers for USB3 built in).
    – Armand
    Dec 8, 2012 at 17:55
  • you could've installed Win 7 with the Boot.wim from a Windows 8 distro and avoid the driver issue
    – Pat
    Mar 21, 2013 at 19:54
  • 1
    Thanks for the answer, and a big booo for the moderator who thinks what is important and what not.
    – Saiyine
    Dec 12, 2013 at 12:15
  • @Pat, the exact chapter is 8.3.2- WDS OS OEM network drivers. Isuggest for you to correct it. Mar 9, 2015 at 15:36
  • @Pat, I have tested the boot.wim file (216MB size vs 146MB for the Win7SP1 version) from a Windows 8.1, and the network driver issue keeps happening. Anyway, I must admit the machine is a modern ASUS X551CA-SX014H portable. Mar 9, 2015 at 16:18

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