So recently about 2 months ago I bought Windows 7 Professional 64bit and installed it on a brand new hard drive. was a clean install. Ever since then when I try and download a file or open 3 or more firefox pages/tabs or 3 or more internet Explorer pages/tabs or play a online game and open 1 internet page my computer will disconnect from the network. All other computers stay online it is only mine. This most notably will happen when playing World of Warcraft in a raid setting during boss fights only without anything else running. I have a Dell Laptop that has Windows 7 and never had this problem, I have a second built computer with windows 7 and it does not disconnect. The only way I have found to bring back the connection is to restart the computer. It is not the router as the other computers do not disconnect when mine does. I have tried un-checking all of the IPv6 options and it still does the disconnect. I also reinstalled the drivers several times so they are up to date. Not sure at this point what is left to try.