I am broadcasting at 2.4 but, My d-link router supports 5.Does anyone know how to switch to the 5 ? Because it is a much clearer signal. Thanks in advance!

I can't seem to figure out why my computer keeps restarting. It will do it on idle and in games.It just does it random, black screen pops up and then it boots back up as if i clicked the restart button. Is there any way for me to figure this out ? I ...