https://h30471.www3.hp.com/t5/bi-ji-ben-dian-nao/HP-ProBook-440-G4-kai-jiBIOS-zi-dong-sheng-ji-hou-wai-lian-xian-shi-qi-xian-shi-wu-xin-hao/m-p/1249305#M466017 <P>HP ProBook 440 G4 开机BIOS自动升级，然后之前正常的外联显示器显示无信号，显示器连接到其它电脑是没问题的，换了新的外联显示器还是无信号，驱动升级以后也不行</P> Tue, 22 Aug 2023 02:37:06 GMT wuyu123 2023-08-22T02:37:06Z https://h30471.www3.hp.com/t5/bi-ji-ben-dian-nao/HP-ProBook-440-G4-kai-jiBIOS-zi-dong-sheng-ji-hou-wai-lian-xian-shi-qi-xian-shi-wu-xin-hao/m-p/1249305#M466017 <P>HP ProBook 440 G4 开机BIOS自动升级，然后之前正常的外联显示器显示无信号，显示器连接到其它电脑是没问题的，换了新的外联显示器还是无信号，驱动升级以后也不行</P> Tue, 22 Aug 2023 02:37:06 GMT https://h30471.www3.hp.com/t5/bi-ji-ben-dian-nao/HP-ProBook-440-G4-kai-jiBIOS-zi-dong-sheng-ji-hou-wai-lian-xian-shi-qi-xian-shi-wu-xin-hao/m-p/1249305#M466017 wuyu123 2023-08-22T02:37:06Z https://h30471.www3.hp.com/t5/bi-ji-ben-dian-nao/HP-ProBook-440-G4-kai-jiBIOS-zi-dong-sheng-ji-hou-wai-lian-xian-shi-qi-xian-shi-wu-xin-hao/m-p/1249308#M466019 <P style="margin: 0in; font-size: 11.0pt;"><SPAN>关机并拔掉电源适配器，移除全部外接设备，按住电源键并保持</SPAN><SPAN>30</SPAN><SPAN>秒再松开，之后，插电源适配器，开机观察。<BR /><BR /></SPAN>开机点击F10，进入BIOS，选择Apply Factory Defaults and Exit ，选择YES，电脑会重启，然后连接显示器试下</P> <P style="margin: 0in; font-size: 11.0pt;">&nbsp;</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="_0-1692672182180.png" style="width: 400px;"><img src="https://h30471.www3.hp.com/t5/image/serverpage/image-id/95502i7749B08ECC4CB640/image-size/medium?v=v2&amp;px=400" role="button" title="_0-1692672182180.png" alt="_0-1692672182180.png" /></span></P> <P>&nbsp;</P> Tue, 22 Aug 2023 02:44:01 GMT https://h30471.www3.hp.com/t5/bi-ji-ben-dian-nao/HP-ProBook-440-G4-kai-jiBIOS-zi-dong-sheng-ji-hou-wai-lian-xian-shi-qi-xian-shi-wu-xin-hao/m-p/1249308#M466019 坏坏的笑 2023-08-22T02:44:01Z