SOLVED! Realtek 8821AE Wireless LAN 802.11ac PCI-E NIC ASUS 

Whenever Realtek 8821ae wireless LAN 802.11ac PCI-e nic ASUS acts up, the number one suspect is network adapter which means it’s wise to run the network adapter troubleshooter. Also, you should consider updating the adapter driver, running SFC and DISM scan, tweaking power options and performing a clean install. You don’t know how to do all of that and could use some help? In that case, you should take a look at this article. 

An Overview Of The Situation

Driver Issues

All in all, computers can only manage network adapters by relying on adapter drivers so the drivers play a key role. If adapter drivers work as expected, your computer should have an easy time maintaining Internet access. On the other hand, if their drivers run into issues (obsolescence, corruption, etc), network adapters would go haywire. Therefore, regarding connection difficulties that involve Realtek 8821ae wireless LAN 802.11ac PCI-e nic ASUS, you must take driver issues into account. 

Corrupted System Files

Since system files define the operation of computers, their corruption results in many hassles. You have trouble getting Realtek 8821ae wireless LAN 802.11ac PCI-e nic ASUS to work? Then it’s a good idea to give corrupted system files some thought.  

Power Options

On Windows, people can choose between Power Saving mode, Balanced mode, and High-Performance mode. In times of need, Windows users could customize the power plan to their liking. That being said, poorly configured power options would complicate the performance of components including network adapters.

What You Could Do

Run Network Adapter Troubleshooter

  • Step 1: Press Windows + I to open Settings.
  • Step 2: Select Update & Security then choose Troubleshoot.
  • Step 3: Click Additional troubleshooters and pick Network Adapter.
  • Step 4: Hit Run the troubleshooter then wait until the troubleshooting completes.
  • Step 5: Assuming that the troubleshooter manages to identify the cause, click Apply this fix.

Think About Adapter Driver

  • Step 1: Press Windows + X to open Quick Link Menu.
  • Step 2: Choose Device Manager then select “+” next to Network adapters to expand the section.
  • Step 3: Right-click your network adapter, pick Update driver and follow the onscreen instructions.
  • Step 4: After the update finishes, restart your computer.

Note: You recently updated the adapter driver? In that case, the driver update may be the one behind the situation. Hence, it’s wise to roll back the driver to the previous version. 

  • Step 1: Press Windows + X to open Quick Link Menu.
  • Step 2: Choose Device Manager then select “+” next to Network adapters to expand the section.
  • Step 3: Right-click your network adapter, pick Properties and go to the Driver tab.
  • Step 4: Hit Roll Back Driver then follow the onscreen instructions 
  • Step 5: Restart your computer.

Run SFC And DISM Scan

  • Step 1: Press Windows + X to open Quick Link Menu.
  • Step 2: Select Command Prompt (Admin) to run the Command Prompt with administrator privileges.
  • Step 3: In Command Prompt (Admin), run the command sfc /scannow to perform SFC scan. 
  • Step 4: When the SFC scan completes, run each of the following commands to initiate DISM scan.
    • DISM /Online /Cleanup-Image /ScanHealth
    • DISM /Online /Cleanup-Image /CheckHealth
    • DISM /Online /Cleanup-Image /RestoreHealth
  • Step 5: Close Command Prompt, restart your computer and see how things turn out.

Check Out Power Options

  • Step 1: Go to Search bar, type Control Panel and press Enter.
  • Step 2: Change View by to Small icons.
  • Step 3: Choose Power options, navigate next to your current power plan and select Change Plan Settings.
  • Step 4: Pick Change Advanced Power Settings then click the “+” beside USB Settings.
  • Step 5: Double-click USB Selective Suspend Setting, go to On battery and pick Disabled.
  • Step 6: Select the dropdown menu beside Plugged in then choose Disabled.
  • Step 7: Click Apply, pick OK and restart your computer.

Clean Install

  • Step 1: Launch your web browser then visit Microsoft’s official website.
  • Step 2: Navigate to the Software Download page then download the Media Creation Tool.
  • Step 3: As soon as the download concludes, you will be prompted to run the tool so hit Run.
  • Step 4: Read the terms and conditions, check the check box beside I accept the license terms, and hit Next.
  • Step 5: Choose Upgrade this PC now then select Next.
  • Step 6: Uncheck the checkbox beside Keep personal apps and files then hit Install.
  • Step 7: Once the installation wraps up, create a new user account and accept the terms.
  • Step 8: Sign in to your account then determine whether the issue persists.


  • Every time your Internet connection seems unstable, restart your router as well as your PC.
  • Set Windows to automatically download and insatiable updates whenever they get published.
  • For optimal network speed, place your router away from obstructions.
  • Unless you have specific demands while using laptops, stick to Balanced power plan to achieve extended battery life and reasonable performance.

What Is A Realtek Wireless LAN Driver?

The Realtek wireless LAN driver is the software package for the Realtek Wireless LAN NICs. In use, the driver allows your PC to communicate with the Realtek WiFi hardware device. The Realtek wireless LAN driver is usually incorporated in Windows updates but you can also download it manually via Internet.

How Can I Stop Windows From Automatically Installing A Driver?

  • Step 1: Press Windows + I to open Settings.
  • Step 2: Select System then choose  About.
  • Step 3: Navigate to the right side then click Advanced System Settings.
  • Step 4: In System Properties, go to the Hardware tab then hit Device Installation Settings.
  • Step 5: Once you are asked “Do you want to automatically download manufacturers’ apps and custom icons available for your devices”, select No then hit Save changes.

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