Lenovo Legion 5 Gen 9 AMD Ryzen 7 7745HX WiFi Disconnecting Fix Windows 11

The WiFi connection on your Lenovo Legion 5 Gen 9 AMD Ryzen 7 7745HX drops frequently during gaming or general use – the internet connection cuts out for 2-10 seconds before reconnecting, online games experience lag spikes from disconnection events, or the WiFi adapter completely disconnects requiring manual reconnection. WiFi driver updates and power management settings resolve disconnection issues on the Legion 5 Gen 9 AMD.

This guide covers WiFi driver updates, power management settings, and adapter configuration for the Lenovo Legion 5 Gen 9 AMD Ryzen 7 7745HX in Windows 11.

“Legion 5 Gen 9 AMD WiFi disconnected mid-game every 15-20 minutes. Very frustrating in online matches. Disabled WiFi adapter power saving in Device Manager and disconnections completely stopped. Simple fix that should be default setting for gaming laptops.” – Afizul, competitive gamer from Subang

Why WiFi Disconnects on Lenovo Legion 5 Gen 9 AMD

The Legion 5 Gen 9 AMD WiFi adapter uses power saving mode that monitors network traffic patterns and reduces adapter power during perceived network idle periods – even brief pauses between game packet bursts. When power saving switches the adapter to a low-power state and a new packet arrives during the transition, the adapter requires 200-500ms to wake fully, dropping packets and causing the brief disconnection followed by reconnection. In online games, this appears as a rubber-band lag spike or momentary disconnect that resets the connection state, sometimes causing game disconnection if the server timeout is shorter than the WiFi adapter wake time.

• WiFi adapter power saving mode entering low-power state between game packet bursts
• Roaming aggressiveness setting causing adapter to scan for and switch to different access points
• WiFi driver version with known disconnection bug – requires Lenovo Vantage update
• Router band steering forcing reconnect when adapter temporarily connects to weaker band

Fix 1 – Disable WiFi Adapter Power Saving

Open Device Manager – Network adapters. Right-click the Intel WiFi 6E AX211 or MediaTek MT7922 adapter – Properties – Power Management tab. Uncheck Allow the computer to turn off this device to save power. Click OK. Also in the Advanced tab, find Power Management Mode or Power Saving Mode and set it to Maximum Performance or Disabled. These two settings together prevent the WiFi adapter from entering any reduced-power state during use. Restart and test gaming connectivity. This single change resolves WiFi disconnection during gaming for the majority of Legion 5 Gen 9 AMD users experiencing periodic 2-10 second connection drops.

Fix 2 – Update WiFi Driver via Lenovo Vantage

Open Lenovo Vantage and go to System Update. Install Intel WiFi or MediaTek WiFi driver updates. Lenovo-qualified WiFi drivers for the Legion 5 Gen 9 AMD include gaming-specific power management improvements that prevent disconnection during game network traffic patterns. After driver update, disconnect from WiFi and reconnect to establish a fresh connection with the updated driver. Some Lenovo Vantage WiFi driver updates also include roaming aggressiveness tuning pre-configured for gaming use, reducing the frequency of connection management events that cause brief disconnects during gameplay.

Set Roaming Aggressiveness to Lowest

In Device Manager – Network adapters – WiFi adapter – Properties – Advanced tab. Find Roaming Aggressiveness or Wireless Roaming Sensitivity. Set to Lowest or 1 (most conservative). High roaming aggressiveness causes the WiFi adapter to proactively scan for and switch to stronger access points during use. In a home or office environment with only one router, this scanning disrupts the current connection without benefit. Setting roaming aggressiveness to Lowest stops the adapter from scanning for alternative connections during gaming, eliminating scan-induced packet loss on the Legion 5 Gen 9 AMD WiFi connection.

Fix 3 – Use 5GHz or 6GHz Band

Check the WiFi band the Legion 5 Gen 9 AMD is connected to in Windows Settings – Network and internet – WiFi properties. If connected to 2.4GHz, the 2.4GHz band is shared with more devices and more prone to interference causing packet loss that appears as disconnections. Switch to 5GHz or 6GHz network from the same router for more reliable gaming connectivity. In Device Manager WiFi adapter Advanced settings, find Preferred Band and set to 5GHz or 6GHz. The 6GHz band on a WiFi 6E router provides the least congested and highest reliability wireless channel for gaming on the Legion 5 Gen 9 AMD with Intel AX211 or MediaTek MT7922 WiFi 6E adapter.

Fix 4 – Change DNS for Connection Stability

Go to Settings – Network and internet – WiFi – Hardware properties. Click Edit next to DNS server assignment. Set to Manual – IPv4 – Preferred DNS 1.1.1.1, Alternate 8.8.8.8. Slow or failing DNS resolution can cause game servers to appear unreachable during reconnection events, extending the visible disconnection duration. Reliable DNS servers reduce the time to resolve game server addresses after any brief network hiccup, making reconnection faster after any WiFi adapter wake event that does cause a brief packet drop on the Legion 5 Gen 9 AMD gaming network connection.

Frequently Asked Questions

Why does WiFi keep disconnecting on Lenovo Legion 5 Gen 9 AMD Ryzen 7 7745HX?

WiFi adapter power saving mode entering low-power state between game packets. Disable in Device Manager – WiFi adapter Properties – Power Management. Most effective single fix.

How do I stop WiFi from disconnecting on Lenovo Legion 5 Gen 9?

Disable power saving in Device Manager WiFi Properties. Update driver via Lenovo Vantage. Set Roaming Aggressiveness to Lowest in Advanced settings. Connect to 5GHz or 6GHz band.

Does Lenovo Legion 5 Gen 9 AMD Ryzen 7 7745HX have WiFi 6E?

Yes – Intel WiFi 6E AX211 or MediaTek MT7922 supporting 6GHz band for low-latency gaming wireless with WiFi 6E router.

Why does Lenovo Legion 5 Gen 9 WiFi disconnect only during gaming?

Power saving activating between game packet bursts. Disable Allow the computer to turn off this device and set Power Management Mode to Maximum Performance in Device Manager Advanced tab.

Conclusion

Lenovo Legion 5 Gen 9 AMD Ryzen 7 7745HX WiFi disconnecting in Windows 11 is resolved by disabling WiFi adapter power saving in Device Manager Properties – Power Management and setting Power Management Mode to Maximum Performance in the Advanced tab. Lenovo Vantage WiFi driver update includes gaming-specific power management improvements for Legion platform adapters. Roaming Aggressiveness set to Lowest eliminates scan-induced packet loss from active connection scanning in single-router home environments. 5GHz or 6GHz band connection provides less congested wireless channel for reliable online gaming connectivity.