hi, just installed a video/audio sender...but to get a good pic&sound on tv upstairs with no interference i have to turn off router( i then cannot use laptop.... obviously

...anyone have any advice as to how to get round this problem ?...i have found out that both items ..sender & router use same frequencies..so, is there anyway i can change router frequency for instance..would that help ? or any other ideas....i have moved position of laptop aroud the house thats not worked...i could try to move router to other room..could that work ? as i would like to know first as it would entail drilling & extending router cable...any ideas would be greatly appreciated...many thanks in advance