Windows 10: Plugged in devices not detected

I plugged my mic which the computer didn't even detect, while it does detect my headset but does not show the attachment in devices connected. Also it turns the audio recorded from my headset to static. i updated and everything but the problem persists

:)

 

Windows 10 after upgade to 1709 if keyboard not plugged then ethernet device is not detected.

When I start my windows 10 (1709 build) without plugging keyboard and mouse, it does not detect Ethernet card.

Mother board is of Intel and Ethernet is on board (integrated).

I have also installed latest Ethernet driver by auto updated drivers from internet.

Steps:

Shutdown pc

Remove keyboard and mouse

Keep lan cable plugged

Start pc

Ethernet device is not detected. It shows in list in Device manager screen. but with Yellow triangle.

Then I need to plug keyboard and just do a hardware scan then Ethernet is detected and all ok after that.

When I start with keyboard and mouse plugged in then it detects Ethernet card and available on LAN.

Am I missing something?

 

Device Manager Un-Hiding Hidden Devices


When you connect a plug and play device, Windows Plug and Play manager detects it, finds and installs the driver. Device Manager lists the device with a solid icon.

The driver is only removed when you uninstall the device, not simply by disconnecting the device. When the device is disconnected, its driver is still installed. By default, Device Manager only displays connected devices. When you show hidden devices, note the Bluetooth icon you see is semi-transparent (not opaque). That indicates a "non-present" device. Sometimes also called a "ghost" device. The driver is still installed but the device is not currently detected (i.e. not connected).

Device can be disconnected when

• Device unplugged (e.g. removing a USB device)
• Turning a device OFF
• Disabling the device in BIOS (then windows won't detect it) or
• Device failure

So

• Check BIOS as suggested
• Check board connections
• Can b/t be turned off by a switch? or keyboard combination?

Also possible the b/t h/w failed

 

Headphones output device is not plugged in

A quick update about additional steps I tried:

1. Uninstall KB4512508 (no effect)
2. Re-install KB4512508 (no effect)
3. Disable and re-enable High Definition Audio Device via device manager (no effect)
   

As a last ditch I booted the PC with a live OS from USB storage and to my surprise the Headphones socket on the front panel was detected and worked fine. I think this should rule out a hardware-related issue.

Once again, I would appreciate any suggestion to solve this problem.

Best regards,