1、数据线特性不良，或与显卡、显示器接触不紧密。检查电脑的外部接线是否接好，接线接触不好也会造成开机后显示器无信号故障的发生。重新插拔一下VGA线、电源线、数据线等各个连线，检查是不是连线的问题。还有[详细]
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