That's true, but, from what I know, no one has tried my second solution yet.

Another solution that just worked for my friend can be found here:

Realtek PCIe GBE Family Controller keeps disconnecting - my fix. Solved - Windows 7 Help Forums

I may have found a solution to the problem. I was pulling my hair out for quite some time trying to determine why I had internet initially and then would disconnect shortly after startup/wake-up.
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