更新一下你的显卡驱动看看!
下个“win7优化大师”里面有鼠标右键的设置选项!
能设置的!
http://global-download.acer.com/GDFiles/Driver/VGA/VGA_Intel_8.15.10.2025_W7x64_A.zip?acerid=634044992966901811&Step1=Notebook&Step2=Aspire&Step3=Aspire 4745G&OS=721&LC=zh-chs&BC=Acer&SC=CHINA_1
http://global-download.acer.com/GDFiles/Driver/VGA/VGA_ATI_8.692.1.0_W7x64_A.zip?acerid=634044991056594083&Step1=Notebook&Step2=Aspire&Step3=Aspire 4745G&OS=721&LC=zh-chs&BC=Acer&SC=CHINA_1
下这两个 安装