You cannot adapt an HDMI lead to the yellow, red, white AV connectors just by changing the plugs on the wires. It will not work and could even cause expensive damage to your audio-visual equipment.
The reason is simple:
HDMI is more than just an expensive lead with fancy plugs at the end. It is a totally digital communications system that sends signals in digital format (ie a series of pulses) along the wires. These signals are encoded and carry digitised information regarding line and field scanning, luminance and hue, audio stereo and surround sound, noise reduction, copyright control (digital rights management), error correction and device control signals. These pulses are sent along the cable at a very high data rate at about 3v. To encode and decode all this requires special electronic circuits at each end of the HDMI cable.
The red and white phono (RCA in the USA) connectors carry simple analogue right and left stereo audio signals at a maximum of 1 volt peak to peak signal strength. The yellow connector carries an analogue Composite Video signal also at 1v p-p. None of these signals are compatible in any way at all with the stuff carried by an HDMI lead.
The only way that you can "adapt" the laptop's HDMI output to the television's analogue AV inputs is to use a special converter box. This will change the digital signals from its HDMI input into analogue Composite Video + audio for the television.
Note that "composite video" is NOT compatible with the "component" video that is also popular in the USA. So you must be very careful about the type of converter that you buy. Most are "HDMI to YpPbR Component" and this will not work with your Yellow, Red, Green AV inputs.
You need something like this:
http://www.amazon.co.uk/SuperStore_Electronics-Composite-Video-Audio-Converter/dp/B00LTHG5IE/ref=sr_1_34?ie=UTF8&qid=1417690921&sr=8-34&keywords=hdmi+to+analogue+tv+converter