Wireless issues (?)

Realtek PCIe GBE Family Controller (google just confused me as to what this is even more)

To answer what this is very simply, this is your driver for Wired Internet (via Ethernet cable).

You sound like you're having an issue which I have experienced many times in the past from wireless connections. Wireless just isn't as stable as a wired connection.

From my personal experience this loss of internet connectivity does not only affect one laptop, but all devices connected to the router. Generally speaking this was a router issue. The router believed it still had internet connection when it was in-fact not properly transmitting wireless internet. Wired internet was never effected. When I switched to a new router, the problem seemed to go away.

The first instances of wireless issues occurred when I was on a 802.11b Wireless connection. I had to use a wired connection for this router or my games would disconnect at random times. When I switched to a newer router which was 802.11g, this problem went away. I assumed that the protocol was the issue (802.11b just isn't fast enough for gaming). Most routers are nowadays are at least 802.11g which is sufficient for wireless gaming. Newer routers are 802.11n which surpasses what is required for gaming; however due to signal degradation it is better to have a 802.11n router versus an 802.11g router especially when you are far from your router.

What I've taken this to mean is that one of the wireless components is breaking; this could either be your laptop's wireless card (the sole way your laptop gets internet wirelessly) or your router. Check if this issue occurs on all wireless devices.