Say you have two separate internet connections, with two separate ethernet cables. How can you switch between them automatically at time intervals, in windows 7?
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If you have Administrator access, one way to do it is to use a PowerShell script and run it with Task Scheduler.
Typing that process with all the script code here is not something I can do right now but it already exists out there:
First, create the PowerShell script that understands the names of your two network adapters by following these instructions:
Then, using Windows Task Scheduler, setup scheduled tasks that call the script with the desired parameters to enable and disable as needed:
If you are willing to read those two posts and experiment, you should be able to get it to work.