Linux Mint 14 KDE - PowerPoint bug

[kinetix]

I'm a Newbie in linux, but i'm tired of windows.
I've instales in my SATELLITE T210-10Z Linux Mint 14 KDE.
I've many powerpoint presentations that i use. LibreOffice change the layout of the presentatiosn, so i've installed Playonlinux and Microsoft Office 2010. Everything went well, but when i start the presentation in PowerPoint only shows a black screen, without any error message... I've to press Esc to go back to PowerPoint....
I've i done anithyng wrong?
What do i need to do?
Thank's for helping me in my way!
Don't want to get back to windows.....

Thanks again.