CPU failure? Motherboard failure?
Well I just built a new system for a family member with the following specs:
DFI LanParty UT NF4-D Motherboard
Athlon 3400+ Venice CPU
1GB DDR400 Kingston RAM
ATI Radeon x550 SLI 256MB Graphics Card
Master Power 500watt psu
Those are really the only relevant pieces to the puzzle. Anyway, I built the machine, but apparently the CPU fan was faulty. The system would boot for a few seconds before the CPU's fail safe kicked in and shut down the system. So the heatsink fan was replaced and everything booted up just fine (just needed an OS). So after bringing it back to my house, I hooked everything back up and turned on the machine. All the fans (including the CPU fan and GPU fan) started spinning. All the motherboard LEDs came on. The hard drive spun to life, and so did the DVD drive. But no image on the CRT monitor. At first I thought it just wasn't plugged in right, so I reseated the cable and tried it again. Still nothing. After that, I moved the known working video card into another PCI Express slot. Same results. I even tried reseating the known good stick of RAM and tried it in other slots. Still no display on the monitor.
There are no POST beeps either.
Unfortunately, I don't have a spare 939 pin processor lying around or 939 socket motherboard, but everyone else who's looked at it seems to think it's definitely one of the two. Is there a way to find out for sure without switching out parts? I would've gone to my local comp store to pick them up and return them, but of course they won't do that.