Q:

How to remove white blank space on top of the page in Lyx

I am trying to remove a blank white space in lyx between text and Image using ert \vspace{-5cm} but it is not working. 
Does anyone know how yo solve this problem?
I have tried using the below link to get my answer but still I did not manage:
Remove space after figure and before text

A:

okay, try
\vspace*{-5cm}
* commands to go beyond cutline.

if this doesn't work. try to clear your page by using \clearpage.
if not move your top margin.
\addtolength{\topmargin}{-5cm}

if not please post your minimal work. ^_^

