@Sunshine 

yes

more than thousand times

  @Sunshine 

Thanks for the clear steps! Just ran the troubleshooter, will upload the screenshot shortly. Appreciate the help..

tubidy

 ✅ 1. Try a Full Power Reset

Unplugging may not be enough, since some USB devices retain power state across sessions.

• Shut down your laptop completely.

• Unplug the device.

• Unplug your laptop charger and remove the battery (if removable).

• Wait for 2–3 minutes.

• Reconnect everything and power on. Then plug in the Archer T4U.

This forces a complete hardware reset of USB devices.

✅ 2. Check Device Manager (Windows 11)

• Open Device Manager.

• Find Network adapters > Archer T4U.

• Right-click and choose Enable device (if the option is there).

• If it's already enabled, try Disable, wait, then Enable again.

• Also check Power Management tab and uncheck:

  “Allow the computer to turn off this device to save power”

✅ 3. USB Selective Suspend Settings

• Go to Control Panel > Power Options > Change plan settings > Advanced power settings.

• Expand USB settings > USB selective suspend setting, and set it to Disabled.

This can help if Windows is not powering the USB device properly.

✅ 4. Use TP-Link Utility (if available)

If you installed the TP-Link Wireless Utility:

• Open it and see if it has an “Enable” or “Activate” option.

• Some cards may have low-level firmware toggles in the utility.

⚠️ Still Not Working?

Since it fails across all machines, this may indicate the device has been permanently disabled or experienced a firmware-level fault when it was disabled in Windows.

🛠️ Recommendation:

Yes, contact TP-Link Support.
Mention that the device LED stays off, it's detected but non-functional across multiple systems, and you've already reinstalled drivers.

They may offer a firmware recovery process or arrange a warranty replacement if the device is bricked.

  @MimHe 

Problem Summary:

• Worked initially, then disabled via Windows.

• Can’t re-enable in Windows 11.

• LED is off (likely no power or function).

• Detected by OS and driver installs fine.

• Doesn't work on any machine afterward.

🛠️ What This Likely Means:

When you disabled the adapter, Windows or the device firmware may have sent a command that disabled it at a hardware level. Some USB Wi-Fi adapters support "deep disable" modes or power-saving states that don’t reverse automatically.

✅ Try These Fixes (In Order):

1. Use Device Manager to Re-enable:

   • Open Device Mn

     MimHe wrote

     I connected my Archer T4U V3 to my laptop today, and it worked without any issues. However, after I disabled it in my Windows 11 settings, I couldn't re-enable it. The LED indicator on the device is also off. Windows detects the Archer T4U network card properly, the driver is installed without any problems, but the card won't enable. I tested the network card on several other laptops and got the same result. Even the driver installation software detects the network card and installs the driver without any issues, but the card remains disabled and can't be enabled. It seems like the network card has been disabled on a hardware level. Is there any way to re-enable it, or should I contact support?

     → Network Adapters.

   • Right-click Archer T4U → Check if there's an option to "Enable."

   • If "Enable" is grayed out or fails, proceed below.

2. Uninstall + Reinstall Completely:

   • In Device Manager:

     • Right-click the device → Uninstall device → Check “Delete the driver software for this device”.

   • Unplug the adapter, reboot, then plug it back in and reinstall drivers manually from TP-Link's official site.

3. Reset USB Power Management Settings:

   • Open Device Manager → Universal Serial Bus Controllers.

   • For each "USB Root Hub" or "Generic USB Hub":

     • Right-click → Properties → Power Management → Uncheck “Allow the computer to turn off this device to save power.”

4. Try Different USB Port (Preferably USB 2.0 and 3.0)

   • Sometimes USB 3.0+ ports handle power differently.

5. Use TP-Link Utility Software (if available):

   • TP-Link’s wireless utility may offer the ability to re-enable or reset the adapter from within its GUI.

6. Try on a Linux Live USB (optional advanced step):

   • Boot into a Linux Live USB environment (e.g., Ubuntu).

   • If the card is still not powered up or detected, it’s almost certainly a hardware-level lock.

❌ If All Else Fails:

If:

• It’s not working on other machines,

• The LED remains off,

• And none of the above methods help…

🔴 The device is likely bricked or stuck in firmware-disabled mode, and not recoverable by users.

📞 Recommendation:

Yes — contact TP-Link Support.
Mention this:

“Device was disabled via Windows 11, now not re-enabling on any machine, LED off, drivers install but adapter is non-functional.”

They may offer:

• Firmware reset instructions (if applicable).

• Warranty replacement.