algorithm2e, \begin{algorithm}[H] problem [closed]

I used algorithm2e package and use it in the following format:

\begin{algorithm}[H]
\SetAlgoVlined
\RestyleAlgo{boxed}

\end{algorithm}


because there is not enough space for the algorithm to show up in the left column of the paper, it is shown in the right column and some free space between paragraph were made in the left side column. My problem is, first I don't want to have these spaces, second: in the right side column the rest of the text went down and cross the bottom margin, and in addition to the ugly view of the page, this warning appears:

overfull \vbox (94.23393pt too high) has occurred while \output is active []


Also I should add that if instead of [H] I write the other possibilities like h, t, ...and so on, or even if I do not write any floating option in front of \begin{algorithm} NOTHING WILL BE SHOWN IN THE PDF!!!! I could only see my pseudo code if I write \begin{algorithm} together with [H] option (i.e. \begin{algorithm}[H])