Wi-Fi Keeps Disconnecting: Adapter Power Management and Preferred Band (Reference Content)

Method 1: Disable Wi-Fi adapter power saving

1. Search for Device Manager.
2. Open Network adapters, then double-click your wireless adapter (often contains words like Wireless or WiFi 6).
3. Open the Power Management tab.
4. Uncheck Allow the computer to turn off this device to save power.
5. If there is no Power Management tab, update the wireless driver using Lenovo PC Manager: Original drivers → Driver scan → update the wireless driver.

Method 2: Adjust wireless network settings

1. Search for Network & Internet (or right-click the network icon in the bottom-right).
2. Select More network adapter options (Windows 10: Change adapter options).
3. Double-click the Wi-Fi adapter icon and click Wireless Properties.
4. Check Connect even if the network is not broadcasting its name, then click OK.

Method 3: Prefer 5 GHz (if your device supports dual-band)

1. Open the wireless adapter driver properties and go to Advanced.
2. Find Preferred Band and set it to 3. Prefer 5GHz band, then click OK.

Reference link (Lenovo): https://iknow.lenovo.com.cn/detail/431626?type=0&keyword=&keyWordId=