Computer Not Starting Properly

[hilbruner]

I finished building my computer today and when I turn the power on the computer powers on but all the monitor reads is "No Signal. Cable connected OK." I know the video card I'm using works as it worked when I used it in another computer. I've read through both the PSU and mobo booklets to no avail for help to my problem.

My setup:
nvidia geforce 3 ti 500
thermaltake tr2-430 power supply
gigabyte k8 triton series (ga-k8u)
western digital wd800 80 gb
amd 64 sempron 2600+
kingston ddr 333 512 mb

Everything except the video card is new.

 

[Geiser34]

Try putting the video card back in your old computer and use the moniter you're trying to connect your new computer to, see if it still works.

 

[beggerking]

try re-seat your videocard or clean your videocard slot.

 

[jackschmittusa]

Does your mb require the 4 pin 12v connector? Is it plugged in? Try re-setting the CMOS. Did it work on the bench before you put everything together? Some mbs (mostly ones with built-in video now) require mem slot1 to be populated. Is that where your ram stick is?