Networking – TP -Link powerline adapters randomly disconnect


I recently bought a new PC which I use for gaming (mostly online games like TF2). In order to play the games without lag, the sales assistant suggested I use an Ethernet connection rather than wireless. Since my computer is upstairs while my router is downstairs, I bought TP-Link powerline adapters that go through the house mains. I can't remember the model name but this is what they look like:

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However, at seemingly random times with no clear pattern, I will be disconnected from the Internet. The icon in the bottom left of my screen that shows my Internet connection will have a yellow warning triangle next to it, and I will be disconnected from any server I am on. Upon turning off the TP-Link adapters at the wall and turning them on again, the problem fixes itself and I am once again able to connect to the internet with no problem. How do I fix this issue?

I have Windows 7 Home Premium.

UPDATE: I have discovered that turning the connector off at the socket and then turning it back on again fixes the problem. It still occurs randomly however, forcing me to crawl under my desk every time it disconnects.

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