Can you advise me how to fix the slow download speed for wifi on my laptop

Question

Can you advise me how to fix the slow download speed for wifi on my laptop

Stephen Darling 5

The download speed, using wifi, on my pc is slow whereas the router is working perfectly. All other devices in the household have good download speeds. I do not have an ethernet cable.

Teams calls are not working

Can you advise me how to fix this please

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Answer 1

Ian-Ng 10,350 Microsoft External Staff Moderator

Hi @Stephen Darling,

Welcome to Microsoft Q&A forum.

I understand that you are experiencing significantly slow Wi-Fi download speeds on your laptop, which is preventing Microsoft Teams calls from functioning correctly. Since you mentioned that other devices in your household have good speeds and the router is working perfectly, this indicates the issue is likely isolated to your laptop’s specific configuration or drivers rather than the network itself.

To resolve this connectivity issue, I recommend proceeding with the following troubleshooting steps:

First, run the Windows network diagnostic tool. Navigate to Settings > System > Troubleshoot > Other troubleshooters, locate Network Adapter, and click Run. This tool can often identify and automatically repair common IP configuration errors.
Next, it is important to ensure your wireless drivers are current.
- Right-click the Start button and select Device Manager.
- Expand the Network adapters section, right-click your Wi-Fi adapter, and select Update driver.
- If Windows does not find a new driver, you may need to uninstall the adapter from this menu and restart your computer, which forces Windows to reinstall a clean version of the driver.
If the speed does not improve, please reset your network stack to clear any potential corruption.
- Open Command Prompt as an administrator and enter the following commands.
- Pressing Enter after each: ipconfig /flushdns followed by netsh winsock reset.
- Once completed, restart your laptop.

Please let me know if these steps help restore your download speeds and stabilize your Teams calls.

Joseph Darling 0 Reputation points

2026-02-08T17:26:35.6466667+00:00

I’m grateful for the answer, unfortunately it did not fix the slow down load speed on my laptop.
Ian-Ng 10,350 Reputation points Microsoft External Staff Moderator

2026-02-09T22:08:24.86+00:00
Hi @Joseph Darling,

The issue may happen from various causes, so I need to troubleshoot further to isolate the problem.

Please proceed with the following steps:

1/ Network Reset

Go to Settings > Network & internet > Advanced network settings > Network reset. Select Reset now and confirm.

This will reinstall network adapters and set other networking components back to their original settings. You will need to reconnect to your Wi-Fi network afterwards.

2/ Adjust Power Management Settings

Right-click the Start button and select Device Manager. Expand Network adapters, right-click your Wi-Fi adapter, and select Properties.

Go to the Power Management tab and uncheck the box specifically for Allow the computer to turn off this device to save power. Click OK to save the changes.

3/ Manually Configure DNS

Go to Settings > Network & internet > Wi-Fi > Hardware properties. Click Edit next to DNS server assignment.

Select Manual, turn on IPv4, and enter 8.8.8.8 for the Preferred DNS and 8.8.4.4 for the Alternate DNS. Click Save.

Kindly update the outcome to let me further check if the problem persists.
Joseph Darling 0 Reputation points

2026-02-11T22:44:46.9033333+00:00

Hi,

Thanks for following up,

I have followed the 3 steps above. however there is no change in my lap top’s download speed.

The router has a download speed of 1110mbp, my surface laptop has a download speed of 195mbp. (I am sitting in the same room as my router.)
Ian-Ng 10,350 Reputation points Microsoft External Staff Moderator

2026-02-12T22:34:05.01+00:00
Hi @Joseph Darling,Thank you for the specific speed test results. The significant difference between the router's 1110Mbps capability and the Surface Laptop's 195Mbps suggests the device is likely connecting to the slower 2.4GHz frequency band rather than the 5GHz band, or there is a configuration limit on the throughput.

Please proceed with the following steps to prioritize the faster connection band:

Step 1: Force 5GHz Band Preference

Right-click the Start button and select Device Manager.

Expand Network adapters.

Right-click the wireless adapter (often labeled Intel Wi-Fi 6 or Marvell AVASTAR) and select Properties.

Select the Advanced tab.

In the Property list, locate Preferred Band or Band.

Change the Value to Prefer 5GHz band.

Click OK. The Wi-Fi connection will briefly drop and reconnect.

Step 2: Run Surface Diagnostic Toolkit
Since you are using a Surface Laptop, this tool can check for specific firmware driver issues that standard Windows updates might miss.

Press the Start button, type Surface Diagnostic Toolkit, and select the app from the list.

Follow the on-screen instructions to run the full diagnostic.

If the issue persists after these steps, I advise you to reach out to Surface support in the Surface app to better investigate the issue by using the Surface App:

Open the Surface app on your Surface Laptop.

Select Help and support.

Click on Get help to connect with a support advocate.

I'm looking forward to your updates.

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Can you advise me how to fix the slow download speed for wifi on my laptop

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