m11x R2 windows usb boot installer problem

Okay i am currently trying to reinstall windows 7 on my m11x R2 that i have upgraded the motherboard from i5 to i7.

i have used Yumi to turn my 16GB flash drive into a bootable drive to install windows.

I have downloaded windows 7 iso directly from Microsoft so i am sure its not the iso. Anyways when i tried to boot from i either get a black screen or i'll get " a message stating that the NTLDR is missing"

i was getting a different message before it said something like " syslinux 4.06 blah blah" basically it was a line of some kinda of product info. Also i have tried to reformat the flash drive though command in windows but every time i get to the "clean" section i get this error" Diskpart has encountered an error: access denied. See the system even log for more information" where do i find the system log?

Anyways i am having no luck getting a fresh new install of windows on my m11x R2. Please help or refer me to a site that will be helpful.