scusa il sonno
questo funziona (qualche volta bisogna anche leggere la documentazione)
tolgo la riga e poi sono a posto
`
\documentclass{report}
\usepackage
{geometry}
\usepackage{graphicx}
\usepackage{fancyhdr}
\pagestyle{fancy}
\setlength{\headheight}{5cm}
\fancyhead[CR]{
\begin{center}
\begin{minipage}[c]{.50\textwidth}
\centering
\includegraphics[width=.30\textwidth]{e147.jpg}
\end{minipage}%
\hspace{10mm}%
\begin{minipage}[c]{.40\textwidth}
\centering
\includegraphics[width=.50\textwidth]{e147.jpg}
\end{minipage}
\begin{minipage}[c]{\textwidth}
\begin{center}
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
\end{center}
\end{minipage}
\end{center}}
\begin{document}
prova 25555555
\end{document}
`
ciao
claudio