[byter]

So currently I have the bare minimum of my pc sitting on my desk.

Problem:
-Connect the PWR on pins.
-PC powers up for 7-8 seconds and then powers off.
-Pause for 2-3 seconds, then powers on again for 2-3 seconds and then off again.
-Phase LEDs show green,green,yellow,red.

Setup:
Gigabyte EP 43-DS3R
E6600
OCZ 850w PSU (also have an generic 550W)
2GB G.Skill 6400
Titan Fenrir TTC-NK85TZ CPU Cooler

ATX 12V and the main ATX plugged in.
CPU and CPU cooler on (cleaned and re-applied with new TIM)
1 stick of RAM in.

What I've tried so far (no success though ):
-OCZ PSU
-Generic known working PSU
-Both sticks of RAM individually, no RAM, 2 sticks of RAM togerth.
-Clearing CMOS

All lead to the same problem as I mentioned above.
So what is wrong, what can I try? Who or what is at fault?

Thanks.

Edited by byter, 07 June 2009 - 03:09 PM.

[Advertisements]

The LEDs, according to the manual, are only functional so far as CPU load is concerned. More lit LEDs = more processing power. So I wouldn't pay much attention to them.
Issues like these are usually caused because the heatsink isn't clipped down properly. On those Intel coolers if the heatsink isn't 100% square the temperature shoots through the roof, hits 80 degrees straight off and cuts the power off, though this doesn't explain why it power cycles. I suggest you try the processor and PSU in another board that supports that processor and that you know works.

[Neil Jones]

The LEDs, according to the manual, are only functional so far as CPU load is concerned. More lit LEDs = more processing power. So I wouldn't pay much attention to them.
Issues like these are usually caused because the heatsink isn't clipped down properly. On those Intel coolers if the heatsink isn't 100% square the temperature shoots through the roof, hits 80 degrees straight off and cuts the power off, though this doesn't explain why it power cycles. I suggest you try the processor and PSU in another board that supports that processor and that you know works.

[byter]

I'll reseat the cpu and cooler first and see if that has any effect, fingers crossed it will stop the loop. It's never that simple though is it, bloomin pc's.

[Jordo]

This is interesting because I experienced the same exact problem last week while helping a friend put together his new build. Although I'm not quite sure what exactly I did to fix the issue.

- I unplugged EVERYTHING. No cables/pins were left untouched.
- Then I removed the heatsink/fan and re-applied thermal compound.
- Removed all RAM, then put back only 1 stick into slot 1.
- Reconnected PWR pin, ATX main, ATX 12V connector, and heatsink fan.

I powered the system on and the LEDs stayed on for the routine 8-10 seconds before going out. For a moment I thought that didn't fix it, but I noticed the heatsink fan was still running. I forgot that those LEDs do not stay on permanently.

I didn't have the issue again. It could be it just had a bad connection somewhere. Just make sure you're not only focusing on the LEDs staying on.

The setup was:
- Gigabyte GA-EP45-UD3P
- Quad Core Q6600 Kentsfield
- G.Skill 4GB (2 x 2GB) 6400
- Corsair CMPSU-620HX 620W