When i connect my notebook to LCD TV with hdmi port, screen goes black but on TV "No signal" message appear and can`t view the monitor on TV. I have windows XP sp3 on the netbook HP 425

After connecting the cable press the Windows key and the P key at the same time. The projector options will appear. Change from projector only to the desired configuration.

im not sure but could it be a comparability issue with the device and the wake up signal from the device to the tv? android systems use a Linux based file system, so the problem may be in the tv's input settings. hdmi input from the device to the tv. and then go to tv input mode and see if putting the device in another hdmi port doesn't work.

Switch off the TV, switch off power and remove plug and wait for 48 hours and retry.

Which operating system? I know in XP I've had to set up a dual monitor screen before the OS will broadcast to the VGA/HDMI port.

Buy another HDMI cable.Try another HDMI cable with another HDMI hub on the tv port.If u still have the same problems,mean the whole main tv Tuner signal board have problems and the caused.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv Tuner signal board for the replacement.

One possibility is that you don't have your TV set to the right input, check to make sure that your TV is on HDMI 1 (or whichever channel your laptop is plugged into). If that doesn't fix your issue, go system preferences > displays and then from there you can assign the TV as a mirror of your desktop or a second monitor.

Ports on the monitor are for receiving the signals from the sources, not for sending signals out to another devices.
Your TV HDMI should be connected directly to the video source output, not through the monitor.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

hey fox,
sounds to me like a connection problem. If the compaqs output is vga, you need to convert the input (tv side ) to hdmi, component, s-vidio... what ever you can find. Typically when you hook up your computer to a flat screen or such, its best to try to use the hdmi ports or the rpg. But if thats not available you need to take the outout from your laptop ( whatever type that might be and input it into your flat screen tv. If you input laptop into tv under ( eg..HDMI) then when you VIEW it you need to select the correct source on your flat screen. Such as hdmi or pcmi or rpg.I know that the do sell alot of cables that adapt from one type of connection to another. Typically only one cable is required from the laptop to the flat screen. If you think about it you are only using the flat screen as a monitor.

Can you change the signal format in the display settiings? 1080p is the native one on your monitor, try difrent ones if availabe. also test difrent resolutions.

connect it with HD RCA's....then youll have both HD and Working cable.