If you have A modem like I do, you will notice a abnormal amount of flickering since it has been happening to me for the last month(a reason why I've been inactive lately), if so unplug it for 30 seconds and plug it again. Another reason is that the computer is being overload with info and it can't handle it so you ping so just have one page. Last reason is that the connection is being interfered with something else so you ping, all you do is get another wifi connecter:>. if its none of those work then call your internet provider