Network Controller Driver Missing After Windows 10 Upgrade

Network Controller Driver Missing After Windows 10 Upgrade Free
Ethernet Driver Missing Windows 10

How to Install Drivers without Internet Connection By Lois Green, Monday, June 26, 2017 A clean install of Windows 7/8/10 can fix many problems, but to some users, it brings new problem: the Windows can't connect to internet because the Ethernet controller driver/network adapter driverismissing. StorDiag Errors after Windows 10 Upgrade. Posted on August 5. Theory: This is a driver’s issues, but taking into acccount Windows 10 takes care of those details, there are not other responsible. Daz on Windows 10 Repeatedly Disconnects Network Drives; Archives.

Hey,
So after 2 failed attempts at installing Windows 10 on an Acer Aspire Z5801 PC, I finally managed to succeed. However, a new problem appeared after installation..
The Wireless network adapter went completely missing. Windows does not detect its existence at all, it's like the PC doesn't have one installed. It doesn't appear in Device manager + isn't listed as an 'unknown device'. It's simply not there at all.
The wired network adapter is there, but not wireless.
Any reason for this?
Things I tried:

Installing the driver from Acer's website - I had to select Windows 7 64-bit as the version is all that's available for my adapter.
I used a USB stick to transfer the setup files to the Acer PC. It said it successfully installed but still didn't appear, even after a reboot.
Used a USB wireless adapter (Netgear) to see if it was an issue with how Windows 10 handles Wi-Fi - nope, that installed and worked fine.
Scanning for Windows updates after using the USB adapter. Some updates were found and installed (no driver ones though), but still no Wi-Fi.

In the end, I reverted back to Windows 7 and what do you know? The adapter got recognised again.
The USB adapter isn't a viable solution since it's required by another PC. I just used it for testing purposes.
Card is a Ralink 802.11n (On W7, it says the manufacturer is LITE-ON)

Hi Kenneth,

Even if you have Windows Update set to automatically download and install all important and recommended updates, you still might not be getting all of the updated drivers available for your devices. For instance, optional updates might include updated drivers that become available for hardware or devices you've already installed. If this happens, you might want to check the manufacturer's website for a driver or update for the device, or try installing any software that came with the device.

Since the issue occur after an update, I suggest that you perform a system restore and turn off the Windows update for the mean time. Here's how:

Go to Control Panel > System and Security > Change Settings
Open the drop-down menu under the Important Updates
Select the option: Check for updates but let me choose whether to download and install them. Choosing this option, you allow Windows to scan for the available updates but it can only download and install them after you choose the ones to install.
Save your changes.

Let me know how it goes.

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Here is some further info: The issue appears to be further limited to PCs running Windows 7 AND using Intel network adapters. PCs running Realtek or other network adapters did not appear to be affected by this update.

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Thank you for that additional information. I suggest that you update the driver on the PC with Intel network adapters.

Regards.

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