Restart the PC, forget/reconnect the network, compare other devices, then update/check the Wi-Fi adapter if the problem is isolated to that computer.
Step by Step
- Check whether other devices disconnect at the same time.
- Restart the Windows computer.
- Forget and reconnect to the Wi-Fi network.
- Move closer to the access point and retest.
- Install appropriate Windows and hardware-driver updates.
- Check the Wi-Fi adapter in Device Manager for errors.
- If every device disconnects, troubleshoot the router/internet service instead.
If That Doesn't Work
- Power-management and driver behavior can affect some adapters, but changing advanced adapter settings should be done carefully.
- A router problem is more likely when multiple devices drop simultaneously.