Just got a Raspberry Pi B starter kit with an 8GB SD card pre-installed with NOOBS, .
When I power it up all I get is the red light, lights up and nothing happens. 
I tried two different tv and cables and still nothing.
If only the red light comes on (especially when connected via Ethernet) there might be a problem with the data on the SD card.
Try reading the SD card on a regular computer. If a PC or Mac doesn't see the files before the first successful run then go to http://www.raspberrypi.org/downloads/ and download the newest NOOBS Offline and Network Install. Follow the instructions in the site's NOOBS setup guide: http://www.raspberrypi.org/help/noobs-setup/.
If only the red light comes on (especially when connected via Ethernet) there might be a problem with the data on the SD card.
Try reading the SD card on a regular computer. If a PC or Mac doesn't see the files before the first successful run then go to http://www.raspberrypi.org/downloads/ and download the newest NOOBS Offline and Network Install. Follow the instructions in the site's NOOBS setup guide: http://www.raspberrypi.org/help/noobs-setup/.
Did you try reinstalling the information on the card from the Raspberry PI website or used a different SD card?