My friend has been having the same issue with his New pc that his old pc had where he is only getting 0mbps upload on ethernet but download is fine. He just tried wifi and apparently is fine. No one else in his house is having ethernet issues after doing some speed tests on other pcs. He tried a new ethernet cord and plugging into multiple different ports on his router. We are thinking there could be electrical interference perhaps because when he played games on his old pc, there was a static sound sometimes and his wireless mouse would randomly stutter. Could this be a electrical issue with his room or do you guys think it could be something else? What other methods should he try before calling an electrician IF its an electrical problem? Thanks for any help.