Since then the modem was changed due to some problems of stress on the modem, I am facing problem in Internet connection, for a time the Internet connection is stable, but after they leave and never return. The LED on the modem in the computer, cable and power, but not flashing LED data transfer, then disable and enable the modem or Internet connection to the connection becomes a certain amount of time, but returns. The thing is why I am facing these problems. At first I thought that is the problem of virus on my computer, so the whole team format and I've installed everything including the operating system correctly. Please help me regarding this issue.
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