Forget any "adapter" arrangement as this gets too tiresome and may not work, its just another tangle to sort through. I strongly suggest you get a VGA cable that allows plug-in for both TV and laptop. Then on your laptop direct it to have a 2nd display or support dual display setup. That will be possible if you have VGA port on the laptop. Then connect the other end to the TV VGA port. Then on your TV, enter the menu that offers "input/source" selection and find the one with VGA or what is considered the VGA port. That maybe labeled RGB or simply PC. I realize it is confusing because the standard just isn't that plain. You will need to play with it, but more than likley the TV side is the one holding up the overall install. The same applies to total HDMI connection if one is found on both TV and laptop. Now, you know why I prefer non-adapter hook-ups. if you use the VGA type connection, you also need the small plug audio cable as well to complete it all. The HDMI won't need this audio cable.
Don't fiddle with the laptop setting, it should default for dual display or once it sees an extra video connection being used. Under its setting, it should provide some display setting like  and  display monitor symbols. One or the other maybe highlighted or showing current setting as . It's the TV side that causes the confusion, sort it out once you leave the laptop setting alone at default.
Cannot figure out how to connect my laptop to tv. (to watch videos/dvds on the tv screen)
My laptop is a very recent Pavilion dv4 with a port for HDMI & a female vga port.
My tv is a bit older with several audio/video rca ports, & a female vga "PC In" port.
So I got a cable with one end fit to the hdmi & the other a male vga for the rear of the tv. I plugged both ends where they belong. No picture on the tv. This is where I start getting lost & confused. I tried changing the tv's function settings from "YUV", "PC in", "AV in", & "TV". Nothing.
Clueless as to what setting adjustments I may need to make to the tv &/or laptop or if I'm even using the right cable. (Running Win7)