Assume that you are running Windows Media Center TV Pack on a Windows Vista-based computer. When you try to search for television content by using an element such as the title, a keyword, an actor, or a director, you may not receive any results. If you run the search immediately after you finish the “Set up TV” process, this is the expected behavior because the indexing process takes some time. However, even about four hours after the “Set up TV” process is complete, you may still be unable to search for television content.

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When you open the Microsoft Windows Media Center TV Pack and tune to a channel that is listed in the Electronic Program Guide (EPG), you may receive one of the following error messages:

Error Message 1

No TV Signal

Error Message 2

There is currently no TV signal detected for this channel. The channel may be temporarily off-the-air, or you may need to adjust or reconnect your TV antenna.

When you open Windows Media Center TV Pack for the first time on a computer that has a Quadrature Amplitude Modulation (QAM) tuner installed, and you choose to set up your TV signal, one of the optional configuration steps will prompt you to scan for channels. When the channel scan completes, you may find a smaller than expected number of QAM channels listed in the Electronic Programming Guide (EPG).

For more information about how to remove a channel from the EPG if you receive a “No TV signal” error message when you tune to the channel, click the following article number to view the article in the Microsoft Knowledge Base:

955485 Error message when you open Windows Media Center TV Pack and tune to a channel that is listed in the Electronic Program Guide: “No TV Signal”

When you watch video or Live TV on a Windows Vista-based computer, you experience the following issues.

Issue 1

While you are watching Live TV in Windows Media Center, you put the computer into standby. Then, you resume the computer from standby, and you continue to watch Live TV. Although video playback starts successfully after you resume the computer from standby, the video playback application stops responding (hangs) after about two seconds.

Issue 2

You play video content that contains multiple video resolution formats. For example, the content contains formats of both 1440 × 1080 pixels and 1920 × 1080 pixels. In this situation, the video playback application stops rendering after the content changes from one format to another.

For example, assume that you play the video content, you click Pause in the video playback application, and then you try to drag the slider to the right side of the seek bar. In this situation, you cannot drag the slider, and the application stops responding.

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You install Windows Vista Service Pack 1 (SP1) on a Windows Vista Media Center computer that uses a digital cable tuner card. Then, the following error message occurs when you try to watch TV:

Tuners not configured

Consider the following scenario:

• You have a Windows Vista-based Media Center computer that uses a Digital Video Broadcasting - Terrestrial/Antenna (DVB-T) TV tuner.
• Media Center Live TV was configured not to use an Electronic Program Guide (EPG).
• You install a Phase Alternation Line (PAL) TV tuner.
• You use the Set Up TV Signal wizard to configure Media Center to use the PAL TV tuner instead of the DVB-T TV tuner.
• You do not download an EPG. This may be because of your location or because you decide not to download an EPG.

In this scenario, after you complete the Scan for Services part of the Set Up TV Signal wizard, you receive a message that resembles the following:

Scanning 100% done (0 service(s) found)

Consider the following scenario:

• On a Windows Vista-based computer, the screen resolution for the LCD screen is set to 1280 × 800 pixels.
• You run Windows Media Player in full-screen mode.
• You switch to TV mode.

In this scenario, the screen may become black.