I purchased a Hauppauge WinTV-HVR 850 TV Tuner a few weeks ago. I first set it up with the antenna that came with it, and it worked fine. The when I tried to set it up with that cable at my house, it could never find the signal. Now I've moved back in to my college dorm, and every time I try to set it up with the cable here, my entire computer freezes and I have to reboot. Any ideas what the problem is?