笔记本hp probook 640 G8 BIOS升级失败: 自升级Window10系统后，开机出现一下几行红色大字： System is booting in Manufacturing Program Mode... Warning: Your system is not fully configured. Please contact HP customeer support. W...
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笔记本hp probook 640 G8 BIOS升级失败: 自升级Window10系统后，开机出现一下几行红色大字： System is booting in Manufacturing Program Mode... Warning: Your system is not fully configured. Please contact HP customeer support. Warning: This BIOS is Not for Production Use. Warning: This HP Endpoint Security Controller fimware is Not for Production Use. 然后在谷歌里面找到方法是升级BIOS，但我在官网对应型号下载的BIOS固件在window10升级及用U盘升级失败，原因：提示“BIOS签名验证失败”，无法升级。请问如何解决，以及如何解决这几行红色字？
