Extreme worry! WinXP Why would ring soon as every 10 seconds?

Users questions:My computer is a WinXP system, and today found that every 10 seconds will ring your voice sound like a drip, which are big brother, big sister could help me first thank you. 20 points to send to you, though small, a gesture of goodwill, please accept my gift! ! Right ah, I use Skynet firewall, and do not know how solution of the problemMust ah? The days I've removed the voice network, and voice solution, but I'm afraid what will the consequences of bad ah? Doing all right? Also, How can I send pictures up, I said, is that screenshot ,
Experts answer: Skynet installed it?
  • This information provided by the users.Thanks!