You are booting to Windows PE, and you experience an error message during the bootup process.
Restarting DHCP client service: retry 1...
Restarting DHCP client service: retry 2...
The message will repeat 19 times.
This error message can appear in two circumstances. Either the machine is unable to reach the DHCP server, or it lacks a network adapter driver.
To determine which circumstance you are dealing with, after the bootup process has completed, go to the Command prompt and run the following command:
ipconfig
Steps 1-3 are covered in KB 178788.
Steps 4 and 5 are covered in KB 178832.
If the above did not resolve the issue, the same error has been noted as a result of bad or out of date BIOS firmware. In those cases the issue was resolved by updating the firmware to the version that was seen as working on other like branded machines.