Greetings, First of all I apologize if someone has already postes this matter. I am new here. I am contacting you about a problem I recently noticed. Today when I opened windows explorer, under the Network tab I noticed a new unknown computer called VALI-PC. I do not have wireless internet, I have broadband connection. I do not know this computer and I did not add it. At first I thought some sort of virus did it. I have reinstalled Windows, thinking that it would solve the problem, yet the unknown computer is still there. I have tried flushing the dns from the command prompt and other similar tricks, rebooted my computer but it's still there. I would like to know how to block and remove this computer from the Network folder. Note that I am not part of any workgroup and I do not own a workgroup. Also I am using Windows 7 Ultimate. Thank you in advance, best regards.