1. Press the Win X key combination to open the super menu and select [Device Manager];
2. Expand Network Adapter, find Marvell Avastar Wireless-AC Network controller (or right-click and select Broadcom 802.11ac Network Adapter);
3. Right-click to uninstall, and do not check Delete when uninstalling After uninstalling the driver software of this device, return to the desktop, select power, and restart the device;
4. Then go to the brand's official website to download the driver for the corresponding model to solve the problem.
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