How can i connect my advent qrc430 to a hd television

There are two options available with this laptop. Unfortunatley you will not be able to produce a High Definition picture, but nether the less it is possible to connect it to a HD TV.
The connections available are;
1x VGA - You will need a VGA Cable (as long as your HD TV has a VGA/PC input) cheapest found on Ebay. There is also a VGA to HDMI cable. Still wont be HD but an alternative to think about.

1x S-Video (TV-Out) - You will need a S-Video Cable (make sure HD TV has this input) also cheapest on Ebay.

Both of these options do not produce audio through them so for this you will need a 3.5mm audio jack to 3.5mm audio jack. Plug one end into your earphone socket on your laptop and the other end into your HD TV PC Audio in socket/Audio in socket. If you have a Cinema/surround system you will need a 3.5mm audio jack to stereo phono, as long as the surround system has an audio input.
LINKS
VGA to HDMI cable: http://cgi.ebay.co.uk/1-8m-VGA-to-HDMI-Cable-Adapter-M-M-For-Laptop-PC-LCD-TV_W0QQitemZ350312945946QQcmdZViewItemQQptZUK_Computing_CablesConnectors_RL?hash=item519047591a
VGA to VGA: http://cgi.ebay.co.uk/5M-VGA-SVGA-15-PIN-CABLE-PC-TO-TFT-MONITOR-LCD-TV-LEAD_W0QQitemZ330370826650QQcmdZViewItemQQptZUK_Computing_CablesConnectors_RL?hash=item4ceba2c19a
S-VIDEO to S-VIDEO: http://cgi.ebay.co.uk/5m-S-Video-Svideo-SVHS-4-pin-Cable-Lead-Male-GOLD-16ft_W0QQitemZ360181396530QQcmdZViewItemQQptZUK_Computing_CablesConnectors_RL?hash=item53dc7bf432
3.5mm AUDIO to 3.5mm AUDIO: http://cgi.ebay.co.uk/1-8M-3-5mm-3-5-Jack-to-Jack-Audio-Cable-Lead-Wire-Gold_W0QQitemZ270522394462QQcmdZViewItemQQptZUK_Computing_CablesConnectors_RL?hash=item3efc64275e
3.5mm AUDIO to PHONO: http://cgi.ebay.co.uk/5M-3-5mm-to-2-RCA-Stereo-phono-Audio-Cable-for-iPod-Mp3_W0QQitemZ250574651547QQcmdZViewItemQQptZUK_Computing_CablesConnectors_RL?hash=item3a5769c09b

Hope this helps. If it does please leave a thumbs up....Thank you.

Depending on how your laptop keyboard is configured plus your TV ,
Heres what to try,Connect a vga cable from your tv to laptop make sure your tv source is switched to pc mode maybe just a blue screen at this point, right click your mouse pad on your desktop (wallpaper), select graphic options then selct sub menu "output to" then select monitor or even dual. I have an acer machine and if i press the Fn button and then F6 which has a symbol representing 2 monitors one dark and one highlighted,  whilst still holding the Fn it will change automatically.

hope this helps let me know if it works for you or maybe you need extra help.
please rate my solution :)