求问，HP840 f5和f8指示灯不亮

[可楽拌乌冬]

hp840 f5静音键指示灯不亮，但是屏幕会显示静音；f8麦克风静音功能完全失效。如果需要更新驱动，请麻烦提供驱动具体名称，尝试下载音频驱动 没有修复。 

[y2kim]

*****提供机器基本信息*****

系统桌面按Win+R打开运行，输入

msinfo32

确定，打开系统信息程序窗口

• 系统摘要-右边内容，Ctrl+A全选，Ctrl+C复制，粘贴出来

[可楽拌乌冬]

OS Name Microsoft Windows 10 Enterprise
Version 10.0.19042 Build 19042
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Manufacturer HP
System Model HP EliteBook 840 G5
System Type x64-based PC
Processor Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz, 1896 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date HP Q78 Ver. 01.16.00, 2021/4/20
SMBIOS Version 3.1
Embedded Controller Version 4.107
BIOS Mode UEFI
BaseBoard Manufacturer HP
BaseBoard Product 83B2
BaseBoard Version KBC Version 04.6B.00
Platform Role Mobile
Secure Boot State On
PCR7 Configuration Elevation Required to View
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume2
Locale China
Time Zone China Standard Time
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 15.8 GB
Available Physical Memory 5.51 GB
Total Virtual Memory 20.1 GB
Available Virtual Memory 8.17 GB
Page File Space 4.25 GB
Page File C:\pagefile.sys
Kernel DMA Protection Off
Virtualization-based security Not enabled
Device Encryption Support Elevation Required to View
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware Yes
Hyper-V - Data Execution Protection Yes

[y2kim]

建议用下面的工具联网检查更新。

HP Image Assistant (HPIA)会通过网络连接惠普服务器，服务器中有和您机器一样型号的一个样本机的记录。通过分析对比，然后得出您和样本机器的差异，提示需要更新安装或缺少的驱动或软件。

HP Image Assistant (HPIA)下载

https://h30318.www3.hp.com/pub/softpaq/sp135501-136000/sp135640.exe

大概过程

安装软件后会自动打开，点分析，然后等结果

点推荐

然后勾选关键和推荐更新，点蓝色download按钮

选择提取文件并安装，点蓝色按钮开始

详细可以请参考下面的压缩包里面记录的操作使用过程

https://h30471.www3.hp.com/hpcn/attachments/hpcn/Notebook/410823/1/HPIA_4.5.8.1.zip

压缩包内是一个用问题步骤记录器记录的mht文件，双击默认用浏览器打开，图片点击放大，再点击恢复。