I've just updated my graphic card and downloaded the new driver for “Ati Mobility HD 4570”
http://support.asus.de/download/download.aspx?modelname=X5DAB&SLanguage=de-de [support.asus.de]
I am thrilled…everything works perfect! the following problems have been encountered and it fixes the problems,
http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=17343&highlight=ati [sidefx.com]
Now, everything has been going smoothly!