Hello i bought creative pebble plus 2.1 speakers around 3 month ago mainly for gaming since yasterday everytime i open game the sub is humming even if i mute the sound its still humming i know for sure its the sub when i plug it off the humming stop the humming stay in the same noise lvl even on max volume or lowest im really dont know what happen everything was fine before any1 maybe knows whats cause this issue?