320 watt power supply
radeon 8500, thats all that really matters for this
anyways when i start up the computer with <b>only those </b>connected, nothing shows up on the screen
Did you make the test without RAM memory installed or you just forgot to mention about it?
If so, try the PSU in another system first. (I had the same problem last week, just a new PSU and everything is working now)
<b>(<font color=yellow>as good as it looks</font color=yellow>)</b>