Windows XP Media Center Edition 2005 cannot detect the set-top box during Automatic TV Signal Setup

If you run Automatic TV Signal Setup, Microsoft Windows XP Media Center Edition 2005 cannot detect a set-top box. This symptom occurs if your TV tuner adaptor has multiple auxiliary input ports.

This behavior occurs because Windows XP Media Center Edition 2005 cannot determine which auxiliary input port contains a TV signal. Some TV tuner adaptors have a coaxial input, s-video input, or a composite input. Typically, the s-video input and composite input share one input port.

To resolve this issue, manually configure the set-top box to work with Windows XP Media Center Edition 2005. To manually configure the set-top box to work with Windows XP Media Center Edition 2005, follow these steps.

Part 1: Open the Optional Setup screen

1. Press the green Start button on the remote control to open the Windows XP Media Center Edition 2005 Start page.
   
   Important If you cannot see the Welcome to the Media Center Setup wizard screen, follow these steps:
   1. Click Settings, click General, and then click Media Center Setup.
   2. Click Run Media Center Setup Again.
   3. On the RUN SETUP AGAIN screen, click Yes.
2. In the Welcome to the Media Center Setup Wizard, click Next 3 times.
3. On the Get the Most from Media Center screen, click Yes, and then click Next.
4. On the Always on Internet Connection screen, click Yes, and then click Next.
5. On the Test Your Internet Connection screen, click Next.

Part 2: Manually configure the TV signal

1. On the Optional Setup screen, click Configure tuners, TV signal, and Guide, and then click Next.
2. On the Confirm Your Region screen, confirm your regional settings, and then click Next.
3. On the Automatic TV Signal Setup screen, click I will manually configure my TV signal, and then click Next.
4. On the Select Your TV Signal screen, click Cable or digital cable, and then click Next.
5. On the Do You Have a Set-top Box screen, click Yes, and then click Next.
   
   Note If the computer has multiple TV tuners, you can see the How many tuners do you want to configure screen. In this scenario, click to select the appropriate number of TV tuners, and then select Next.
6. On the Prepare for Set-top Box Setup screen, make sure that all the bulleted steps are completed, and then click Next.
7. On the Select a Working TV Signal screen, click the correct signal input, and then click Next.
8. On the Set-top Box Remote screen, click Yes, and then click Next.
9. Follow the instructions on the screen to complete the installation.