What should I do if there is no TV signal on the screen after starting WinDVR?
Check the following items: Verify that the video input cable from your TV antenna or cable TV connection is securely attached to the AV/Tuner Box. Check the video out cable between the AV/Tuner Box and TV set. In the Setup (Properties) dialog of WinDVR, select the TV tab and check the Tuner options, including Input and Tuning Mode. Be sure to set the Video Standard parameter properly, e.g., NTSC_M if you are in the USA.