Ever since i got my computer from repair (they changed the motherboard) the computer basically freezes and restarts after a certain amount of time, whlie inside a game like WOW its much faster, it takes longer for it to do it outside if im serving the net but if i go to some websites like myspace etc it restarts pretty fequently, i also hear this ticking sound sometimes when it freezes before restarting inside the computer. Anybody know what might be the problem? THanks