How to connect laptop to HDTV?

I've got a Lenovo Ideapad Z570 and a LG Cinema HDTV. I wish to connect them via HDMI, but the TV shows 'No Signal'. I've tried restarting the Laptop and TV, but it didn't work. All the drivers are updated. I've tried decreasing the resolution, but I don't know the appropriate resolution that I need to set. The cables are plugged in good and I've tried different cables but neither of them worked.

Added (1). I've tried switching the input to HDMI 1, it shows 'No signal'.

Added (2). I have no 720*1080 mode in my video card. I've tried setting it 1280*720 at 16 bit 60Hz, still no display

Guest

An HDMI cable is necessary. Maybe you need an adapter for transform the data from male HDMI to female HDMI and connect to HDTV at last. Something like dongle are used in this procedure.
The dongle supports Bluetooth and Wi-Fi.
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rhino

Sounds like you need to change the input settings

Think Tank

TV's are not plug and play, you will have to go into the video card driver setup and choose a generic 720x1080 driver.

Rolomatic

Have you tried switching the input on the tv?
there should be an input button on your remote or a source button. Try that

Guest