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#21
With the same Internet Connection but with a different machine, see if the same thing occurs, this should clarify whether the fault is within the machine or with the ISP. Check Resource Monitor for any suspicious network activity. Do a scan with Spyware Blaster and make sure you had the latest virus signature with the Malware Bytes Anti-Malware Scan. I personally had clients which had the same issue, no virus is detected, but suspicion is clear.