I have a hp Pavillion dv4 Notebook pc , windows vista service pack 2, 32 bit operating system
last week I connected my laptop to my vizio tv with a HDMI cable to watch a video and it worked today when I tried the same thing the tv screen read no signal. When I connect the HDMI cable the laptop makes a beeping noise but no picture on the tv nothing. The HDMI cables are working with other divices with direct tv box, playstation, bluray. I've tried different HDMI cables and still same message. I've tried googling to search similar problems. One site suggested drivers might be out of date. Please advise.
Your problem may be much simpler than updating drivers, so I would hold off on that for now. This may sound silly, but first thing I would do is make sure your tv is set to the correct input for the cable location (e.g. hdmi1, hdmi2, etc). Once that's ruled out, you may need to check your graphics card properties. Connect the hdmi cable and go to 'graphics properties' (right click on your desktop or go to control panel to find the option). When you open that window you will find many options which will vary depending on your graphics card, but you should see 'display devices'. In that section you can choose single display 'digital television', and whenever you connect the tv, the display will switch over. Save any changes and that should do it. Just remember to change the TV input each time. I hope this helps.