We have not had similar reports like the one you are having so; I can give you some recommendations that you can try to fix the issue.
I understand you have installed the latest graphics driver however; you can verify the version you have installed is the one that is in the following link http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=20840&lang=eng&OSVersion=Windows%207%20(32-bit)*&DownloadType=Drivers. In case that graphics driver gives you any issue I recommend reinstalling the graphics driver from Acer website.
You can verify the other drivers and also the Windows Updates are up to date.
If issue persists I recommend getting in contact with ASUS in order to get more advanced troubleshooting steps for this issue.