显卡连接输出设备的线材接触不良或者是不稳定出现点不亮无信号;
可重新插拔连接输出线材,开机按AUTO键自动搜索信号源;![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/ac6eddc451da81cb6074ce1d5a66d0160824314b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
显卡使用转接输出,转接的信号不稳定或者是显卡不支持转接导致无信号输出;
更换转接头,转接线或者是选择直连输出看是否能正常输出;![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/5fdf8db1cb134954169ca4b45e4e9258d0094a5b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
显卡驱动程序安装错误或者是不匹配,显卡是无信号输出;
核对显卡型号与系统位数到显卡官网下载安装匹配的显卡驱动程序;![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/cdbf6c81800a19d897dbc8d53bfa828ba71e4601?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
显卡插上后不输出信号不一定是显卡的原因,有可能是内存条故障或者是接触不良导致;
可单根重新插拔内存条,或者更换内存条使用看是否有所改善;![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/0b46f21fbe096b63320b118004338744eaf8acd4?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
把显卡放在其他主板上使用是否是一样的问题,如为硬件故障,可联系售后维修处理。