Constant Disconnects!

I'm always deeply suspicious of magical solutions. Sometimes the magic disappears and the problem returns. (And no possibility of debugging in the meantime.) I don't know how it could be your ISP without hurting the other devices at your location. Your router is a more likely choice - especially if your is the only Ethernet-connected device. Does the router maintain an error log of any sort? Do you have good wireless security? It's possible (although unlikely) that someone with a static IP addr the same as your computer is connecting to your wireless network. An even less likely possibility: was there is a script or process running on your PC that was repeatedly doing something to your Ethernet adapter? It might be worth looking in the Windows event log to see if anything suspicious was causing errors around the times you lost connectivity.