What is the problem?

I have a 1 year old build that is giving me a headache, here are the specs

Intel Core i5-4430 3.00GHz (Haswell) Socket LGA1150 Processor
ASRock H87M PRO4 Intel H87 (Socket 1150) DDR3 Micro ATX Motherboard
GeIL Black Dragon 8GB (2x4GB) DDR3 PC3-12800C11 1600MHz Dual Channel Kit
Samsung 120GB SSD 840 EVO.
Corsair CS450M 450W Semi-Modular 80+ GOLD Certified PSU

Heres what heppens, when i turn the pc on, it would start up but nothing displays on the screen, I have tried another VGA cable and nothing, then I tried using a HDMI cable, but when it starts up it shuts down after a few seconds. So I checked the Heatsink/fan to see if it was overheating, heatsink was fine, but I did clean it up and reseated it. Then I tried my own PSU to see if that was the problem, still nothing.

Any ideas guys?
Thanks
Dan

Have you tried to clear the CMOS or used 1 stick of RAM at a time?

Yes I tried that, I have also tried my own PSU and GFX card combination, still nothing

On board graphics? GPU? You havent listed that...

What case are you using?

When you say nothing displays on screen does the screen actually come on or flicker as though its connected to the PC.
Clear CMOS then with no drive plugged in use 1 stick of ram in each slot testing each time.

bigdan676 said:

Yes I tried that, I have also tried my own PSU and GFX card combination, still nothing

Click to expand...

Some ASRock boards have issues using the pin method to clear the CMOS have you tried removing the battery while you go make a tea?

It was using on board graphics yea, but I have also tried my GTX 960 and still nothing. The screen dosn't flicker at all, its like theres nothing going to it. The last thing I did was clearing the cmos, both the pin method and unplugging it.

Ill be trying it all outside the case then just to rule out any shorting issues.