Brand new Win7 HTPC and using a Diamond HD750 USB tuner that installed fine but now every time I shut down and reboot, I have to unplug the USB cable and reconnect it to get Media center to recognize the tuner.
TRY putting WMC in windowed mode and run the Digital Advisor it has. Be sure to apply/save at the end. Seems like WMC is not remembering the tuner, this may help. Is it OTA or QAM you're tuning? Since you're using WMC as your front-end, did you have issue getting your channels setup?
Does your system remember the USB tuner upon reboot? Check your Device Manager. It's odd that a device would not be recognized, trying to see if it's at the system or application level.
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