Install TFTPD32 Server
From ERPXE Wiki
To install TFTP Server on Windows:
Download TFTPD32. (We used the tftpd32 standard edition zip v4.00) http://tftpd32.jounin.net/tftpd32_download.html
Create a folder called "c:\tftpboot" Extract tftpd32.exe to the "tftpboot" folder.