WIFI connection not stable

Click here    and here to troubleshoot and resolve wifi  isssues

To receive assistance from Dell chat support, they need to verify the warranty status and ownership. Then you must troubleshoot with them.  Click the "Get Help Now" icon on the right to start a live chat session. If already out of warranty, click here for the Dell out of warranty offering.

You can verify the network status based on the Ethernet interface indicator lights:
1) Green light indicates connection status: A lit connection indicator signifies a normal line connection.
2) Orange light indicates signal status. When the connection indicator is lit, the signal indicator signifies the following:
a) Flashing: Indicates a normal signal and active communication.
b) Off: Indicates no communication.
c) Steady on: Indicates a network cable short circuit.

3), You can locate the network adapter in Device Manager, uninstall it, restart your computer, and test whether this resolves the issue.

If  computer's network port is faulty, you can use a hub with an Ethernet port, this also allows you to connect more peripherals to your computer, a mokin-multi-port hub with an Ethernet port that I'm currently using works very well.