warlock:Sounds like you just need to run the setup for TV again. Tasks/Settings/TV/Set Up TV Signal
Foxer:Yup, that's all you need to do, and it will re-scan you TV signal. Your card might not support the signal though. So if you've already run that, and still had the problem, that's probably why.
Cable systems generally use QAM (Quadriture Amplitude Modulation) and you must be sure that your card supports that.
OTA (Over The Air) ATSC broadcast uses 8VSB (8-level Vestigal Sideband Modulation). Most cards only support 8VSB. Even if your card does support QAM Vista Media Center doesn't support QAM without some add-ons. TV-Pack 2008 is supposed to allow QAM but my experience wasn't great. I have a Hhauppauge 2250 which does support QAM and I got a hold of copy of TVPack, loaded it on a brand new Vista image as was suggested a few months back, It sort of worked but not reliably so I gave up on it.
Good Luck,
SD
Luski:Hi!So I just bought a new HP HDX laptop and decided that getting a TV Tuner card would save bringing a TV to school with me.I have an HDTV Tuner Card that came with the antenna.The first time I set up the card, I chose to use the antenna to see if the card was working, I could get a signal etc...Now, I tried taking out the antenna and hard wiring it into the cable that I have in my house. Windows Media Center won't recognize that I have hard wired the cable and is searching for a signal from the antenna, that is not plugged in.I can't figure out how to change what it is trying to get the signal from? Is this a Media Center issue or is this a card problem? Or a Vista problem that I don't know of?