这里讲得很清楚,你要设置一下Graphics Options。请看下面的链接。
http://www-307.ibm.com/pc/support/site.wss/MIGR-58625.html#ie
看这一段,关于你的电脑的型号 T43 的:
Setup instructions for Intel Extreme Graphics Chipset
Right click a blank area on the desktop and move the mouse arrow down to Graphics Options, then to Output To as shown below.