I just got a custom-built PC today, and connected it to my TV to save money on a monitor and sound system.
I finished installing the chipset drivers that came with it on a disk, the PC started to reboot then...nothing. The screen just went black. I tried to reboot, but the same happened.
* Motherboard - Asus B85-Plus
* PSU - XFX Pro Series
* Graphics Card - Asus Q8434
Its possible the video drivers are trying to output a resolution that your TV doesnt recognize. Try booting the computer in safe mode, or VGA mode (continuously tap F8 while the computer is booting to get the boot menu).