Linux mint usb installer help?

I am trying to install Linux mint from my windows 7 computer i have put the ISO file onto my usb the installer comes up but then i get an error saying "Kernal panic not syncing: VFS unable to mount root fs unknown block. Please help me out i have never used Linux before. I have seen people who are anble to... show more I am trying to install Linux mint from my windows 7 computer i have put the ISO file onto my usb the installer comes up but then i get an error saying "Kernal panic not syncing: VFS unable to mount root fs unknown block. Please help me out i have never used Linux before. I have seen people who are anble to type commands in but i cant do anything i am currntly using windows 7. Thank you in advance.
Update: I have used live usb installer thing to put the ISO on the usb but when I boot up from the usb I get this error from the linux mint installer
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