For example with tabularx:
\begin{table}[htb]
\caption{My table}
\label{my table}
\begin{tabularx}{\textwidth}{p{22mm}>{\raggedright}X>{\raggedright}Xp{33mm}}
\rowcolor{black}
\textcolor{white}{Column 1}
& \texcolor{white}{Column 2}
& \textcolor{white}{Column 3}
& \textcolor{white}{Column 4} \\
A & B & C & D \\
\end{tabularx}
\end{table}
For more, please provide minimal but complete document (starting with \documentclass{...} and ending with \end{document}), which will show your attempts so far. Based on it, I can (easily) complete my code to a MWE (just now I haven't to make MWE from scratch).
Edit:
If your really like to star table at page border, than you question is duplicate to question the-inserted-picture-does-not-start-from-the-left-edge-of-the-paper. See, if answer there gives what you like to obtain. In your case you than only need to adopt tabularx width to page width.
tabularyis less know, but also handy! – ebosi Oct 24 '16 at 13:18