This is how I deal with Flashrom:
1.) Download flashrom from: flashrom.org
2.) Make a folder in C:\ and name it what ever you want, I name it flashrom.
3.) Then depending on what format you downloaded flashrom, unpack it in C:\flashrom
4.) Run cmd from your start menu search tool textbox, once open, type: "c:\flashrom\flashrom.exe" (without quotes) and hit ENTER.
Note: for those having problems unpacking flashrom, use 7Zip or TarTool to unpack it.