Wifi randomly disconnects when using battery

[Tigris55]

Wifi randomly disconnects when using battery.

Realtek RTL8821CE 802.11ac PCIe Adapter

driver version: 2024.0.10.209

2019. 12. 04.

I tried and did not work:

1. uninstalling, reinstalling network adapter driver via device manager. Updated to latest.

2.  updated windows

3. Device manager > select the WIFI drivers under network adapter> Right click go to properties  > Under properties go to Power Management Tab> Uncheck  "Allow the computer to turn off this device to save power". 

4. Adjust the wireless network adapter power settings, "In the Advanced settings window, click Wireless Adapter Settings, then click Power Saving Mode, and then set On battery to Maximum Performance."

I don't know what to do...

[Echo_Lake]

@Tigris55
Thank you for posting on the HP Support Community.

Don't worry as I'll be glad to help, however, to provide an accurate resolution, I need a few more details:

• Did this happen after a recent window or software update?
• Have you made any hardware/software changes?
• Did you make any changes to the settings of your PC prior to the issue?

While you respond to that, let's try these steps:

Wireless Module test:

Use the following steps to open the Component Tests menu.

1. Hold the power button for at least five seconds to turn off the computer.
2. Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu appears, press the F2 key.
3. On the main menu, click Component Tests.
4. The Component Tests menu displays.
5. Wireless Module Test - This test checks that the BIOS detects the wireless module and that it is enabled.

To run the test, click the Wireless Module, and then click Run once.

• The Wireless Module Test takes 30 seconds to complete.

If the test passes, continue with these steps:

1. Go to Start, search for Device Manager, and open this result.

2. Expand batteries.

3. Right-click on the ACPI option (usually the 2nd option) and select delete or uninstall. Follow the prompts.

4. Shut down the computer. 

5. Disconnect the charger.

6. Remove the battery.

7. Hold down the power button for 1 minute.

8. Insert the battery only.

9. Attempt to turn the battery on.
 

Reinstall the network adapter using HP Recovery Manager (Windows 8, 10)

Reinstall original software or drivers using the HP Recovery Manager. If your PC does not locate the Recovery Manager installed, click the ‘next step’ button below.

1. In Windows, search for and open HP Recovery Manager. If prompted for an administrator password or confirmation, type the password or provide confirmation. If prompted by User Account Control to allow the program to make changes to the computer, click Yes.
2. Under Help, click Reinstall drivers and/or applications and wait for Recovery Manager to generate a list.
3. From the combined list of applications and drivers, with the drivers listed first, select the checkbox next to the drivers you want to reinstall. NOTE: The name of the adapter varies, depending on which one is installed on your PC.
4. When the Installation is completed message displays, click OK.
5. Close all open applications, restart your computer, then try connecting to the Internet again.

Set BIOS default and restart:

1. Restart your notebook.
2. During startup, press F10 repeatedly until the BIOS menu is displayed.
3. Once the BIOS menu is displayed, press F9 to restore factory defaults.
4. Select Yes to confirm.
5. Press F10 to save changes and exit.
6. Select Yes to confirm.
7. The computer restarts using the default settings.

After your computer has restarted once in Windows test your wireless connectivity. Try connecting to the Internet again.
 

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[Tigris55]

"Wireless Module test:"

I don't have this option. I don't have  Component Tests menu.

"Reinstall the network adapter"

I reinstalled multiple times, not working.

"Set BIOS default and restart:"

It is a brand new notebook. I upgraded the BIOS. Still having the issue.

I see that dozens or hundreds of other people have this wifi disconnecting problem with HP laptops. Why don't HP do anything about it?

[Echo_Lake]

@Tigris55

Thank you for posting back. 

I appreciate your efforts to try and resolve the issue. 
The last thing I can suggest trying to restore the computer back to the factory settings. Performing an HP system recovery (Windows ) While doing the recovery there is an option to backup your personal files. If you have not previously done one now is a good time. 

Restoring Files that were Backed Up Using HP Recovery Manager (Windows )You can also contact HP support for assistance. They can remotely access your system to help alleviate difficulties: www.hp.com/contacthp/

The HP Cloud Recovery Tool allows you to download recovery software to a USB drive. You can use the downloaded recovery image file in order to install the Windows operating system. 

• Click here: https://support.hp.com/in-en/document/c04758961#AbT3to perform System Recovery (Windows 10) 
• Click here: https://support.hp.com/in-en/document/c06162205 to Use the HP Cloud Recovery Tool (Windows 10)

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

[Tigris55]

I upgraded the HP PC Diagnostic tool and run the Wireless Module test and it says the wifi adapter is OK but i still have the wifi disconnecting problem when using battery. The wifi is ok when i plug in the cable. Help.

[Kumar0307]

@Tigris55

If the issue persists, please contact our HP Support team for Service Options as it could be a possible hardware issue:

1) Click on this link - www.hp.com/contacthp/

2) Select your product type below.

3) Enter the serial of your device.

4) Select the country from the drop-down.

5) Select the appropriate option based on your preference.

6) Fill the web-form and proceed further.

Keep me posted for any other assistance.

[Tigris55]

Can I replace the Realtek wifi adapter to another wifi adapter that actually works in this notebook? If yes which are good wifi adapters?

[Tigris55 · Accepted solution]

Thanks for nothing! I will Never buy HP product ever again!

[Manstein]

I had the same issue. All advises on power management did not help. But wifi virtual adapter was somehow dissappearing once unplugged from the power. So checked few forums no help even from  microsoft advise.

So what helped me is  I have Turned off This PC can be discovered for projection only when it is plugged in.

Even restored power setting to default after that. All issue was sorted.