HTPC Won't post at all.

[ps2cho]

Hi guys,

All of a sudden my HPTC wasn't working. I pulled it out and plugged it directly into another monitor and its not displaying anything at all.

How can I confirm what the issue could be?

1) Tried HDMI, tried VGA. Neither post.
2) Swapped known good RAM. No post.

Its a very simple system. Nothing fancy.
Specs:

Corsair CX400
AMD A6-5400K
ASRock FM2A75 Pro4-M
4GB G.Skill DDR3
Seagate Hybrid 500GB HDD.

 

[Automata]

Reset CMOS? Speaker hooked up to hear beeps, if any? Disconnected all components that aren't required? Reseat everything?

 

[ps2cho]

I have not, no. I'll do all the above and report back. I'll have to see if I even have a speaker I can plug into it.
Seems strange though since I haven't touched the thing.

 

[Nebulous]

Toss a pcie video card in there and check.

 

[trents]

Swap out the PSU and the hard disk too. Fans can spin and lights can light but that doesn't mean the PSU is good enough to carry the load of boot up.