I use Miktex and Winshell to edit my script. I want to inset imae. Whenever I compile my code I get this error:
Error: LaTeX Error: Cannot determine size of graphic in internal_structure.jpg (no BoundingBox).
This is the minimal script:
\documentclass[letterpaper,twocolumn,10pt]{article}
\usepackage{graphicx}
\begin{document}
\begin{figure}[!b]
\begin{center}
\includegraphics[width=0.3\textwidth]{internal_structure.jpg}
\end{center}
\caption{\small A general overview}
\end{figure}
\end{document}
I found similar previous posts but please do not mark this as duplicate. I still can not solve the problem despite previously posted solutions. For example, this post Post suggests the following answer:
You need to use pdflatex for this. Actually latex is pdflatex in DVI mode in modern distributions, but it can read the sizes only in PDF mode for some reason.
But I do not get how to use pdflatex? I already installed MikTex (basic-miktex-2.9.5872) package which should include the pdflatex and still get the error.
I need to get rid of this error. Can you please help me identify the source of the problem and how to solve it?

pdflatex fileinstead oflatex fileif your editor is running the command for you, it depends on the editor you are using – David Carlisle Oct 22 '16 at 09:01