Windows startup pop up

I don't know if this is the right forum to post but i really need help.

So when I power up my pc for a second a pop-up opens and closes, I toke a picture, so take a look
That above Power Up is my rain meter so don't be confused



I have AVG 2012 as my anti-virus

Thanks in advance

Which window is the one that you do not want?
The blue one on the left?