My specs are as follows
Case - NZXT Phantom
Mobo - Asus Sabertooth p67
Pro - Intel i5 2500k (No OC)
Ram - Corsair 2x4gb vengeance ddr3 1600mhz
Gfx - Nvidia KFA2 560ti EX OC
Snd - Auzen X-Meridian 7.1
Psu - OCZGXS600 @ 580W
Here is a video of what happens when i turn it on - Youtube Video
When the power cable is plugged in (not turned on)the stand-by light is green.
When i power it up, the graphics + sound cards light up & spin there fans and i can hear the hard drives working. The case fans also work and sound like they are at the correct RPM.. the biggest fan you can see to the right actually stopped working a few months back, unrelated i suppose, i've been meaning to replace it.
It sounds as if it is booting up normally except that it doesn't produce the standard, A-OK beep from the motherboard shortly after starting. Normally on bootup it beeps once while cycling through each led - making them flash a few times one after the other before stopping. Now i'm not hearing any beeps at all and it is switching from the dram led to cpu led lightning fast and staying on cpu led constantly until i power it down.
Also, in the video - my computer does something for the first time, it turns itself on, then off and then back on after the power button has been pressed. This has not happened before but is continuing to happen everytime i start it up now.
I have disconnected sata cables for hard drives and taken out the ram, trying to run it with 1 stick, also swapped them around.
I have not heard any pops, seen any flashes or smelled anything burning and i had my head inside the computer as soon as i realized something was wrong.
Unfortunately that is all i have to go on seen as it won't even fire a signal to the monitor.
Any help at all will be greatly appreciated guys, if anyone has any ideas as to what the problem may be, please do share. I really need a plan of action as i am feeling pretty helpless just now. Thank you for your time.
Small update: I reset the CMOS Jumper (My first time doing such). When i booted it back up, for the first time since before that video was recorded the computer did not actually turn itself off and back on again while attempting to boot.. I suppose that is a good development?
I also tried the MemOK button, it turned my computer on and off a few times but i don't think it helped. Still sitting with a red cpu led.
Edited by Staffordz, 24 September 2012 - 08:59 AM.