Resolved Newly built PC Issue - Power??

I've spent this weekend building a new PC and I've run into a problem that is driving me crazy. Before I explain, this is the hardware that I'm using:

ASUS P7P55D-E Motherboard
Intel i7 860 CPU (LGA 1156)
Corsair memory 2x2GB = 4gb total
SATA DVD burner
Radeon HD 5750 GPU
Thermaltake TR2 600w PSU

The first time I turned the PC on it would not boot, but everything powered on (fans, heatsink fan, GPU, etc) but this motherboard has a CPU error LED light that lights up red when there is an error with the CPU. Intially I thought it might have been installed improperly but I removed it and checked it out and it was ok. I then thought about power and read the ASUS User Guide. There I found that I did not plug in the 8-pin power plug (the guide says that the system will not boot without it). Initially I had only plugged in the 24-pin plug. So, I thought that I had resolved the problem by plugging in the 8-pin plug. But, when I fired her up the power comes on and off in a few seconds intervals, and she won't turn on. Yet, if I unplug the 8-pin power plug everything powers up, but I get the red CPU LED light indicator, and the machine does not boot.

I have no clue as to what to do. I unplugged some of the external fans, the 4-pin GPU power connector, checked the connectors to the HDD and DVD, made sure that the 24-pin and 8-pin plugs are seated properly and everything seems to be connected properly. Is a 600w PSU sufficient? Can anyone help??? I'm really frustrated!

 

Unplug one of the memory sticks. Maybe you have a bad one.

 

MrBill, thanks. I should have noted in my post that I tried removing memory sticks and I still have the same problem. Also, after I wrote the post I decided to install a lower level, older PCie GPU and the problem is still there.

 

Got a meter that you can check the PS outputs with?

 

Seems there are a few boards with this model (don't you just hate that )
Therefore you will need to quote the exact board each time you create a thread and need help, or just add this info to your > System Specifications in your profile

Which one is yours?

P7P55D-E Premium

P7P55D-E PRO

P7P55D-E Deluxe

P7P55D-E EVO

 

MrBill, no I don't have a meter to test the PSU but I have a friend who has one. I'll pick it up tomorrow and check it out.

kmsland, according to the box I have it's none of the above! Here's the link to where I bought it: http://microcenter.com/single_product_results.phtml?product_id=0326254

 

It should be typed on the Motherboard

Not sure if ASUS T.Probe shows the exact version or not? You might want to try it. (Obviously when its running)

 

Did you go into the BIOS to set the System/CPU Warning Temp.

 

kimsland, I'll give you the exact info on the board tomorrow.

lj50, the machine does not boot to bios - it does not boot at all. Without the 8-pin plug everythinturns on but I get the CPU LED error. With the 8-pin it turns on and off in seconds intervals.

 

Try removing the Video card and see if it boots
Actually you won't "see" anything, but you should see all the signs of it booting normally (fans; hard drive spin-up noise etc)

 

Sorry I misread your post My apologies sir.

 

Could try a cmos reset. Might work for you. Try just 1 stick of RAM in the slot closest to the cpu socket, remove all peripherals including the hard drive. Leave the gfx card in and try again.
Are you getting any beep codes? Any beeps at all? Is the motherboard speaker jumper set correctly (if you hear no beeps)?

 

Thank you for all the responses:

kimsland: I cannot find any other infor for the MB other than ASUS P7P55D-E. I booted without the video card and no changes. The power goes off and on.

lj5o: No problem, it's really hard to understand.

crunchie: I tried the CMOS reset and no luck.

 

Do you have another Power Supply? (apologies if you have tried this already)

You should be starting to make the decision to RMA the motherboard I feel

 

No, I don't have another power supply but during the day today I will borrow a meter and another power supply from a friend. First I'll test the one that I have and try the other one. I agree, I think the MB might be the problem but I want to try everything that I can before I RMA. I'll keep everyone posted.

 

By the way, the machine does not make any beeps at all.

 

I personally don't like the try the meter idea, as the power supply needs to be under load to see the issue (if it has an issue)
The test change over power supply is preferred.

By the way, I have thought of two more (quick) ideas (sorry 3 now )

-Unplug the CPU Fan > Turn on (I have seen new fans cause this issue)
-Remove the motherboard from the casing in case a post is touching the electronics and then bench test it (this is obvious, so I'm sure you have done it)
- Hold the ON button in for 30secs with the power out (dispersing internal power) actually also pull the 24 pin, and put it back in > Turn on

 

Did you thermal protect the cpu or run the unit without the cpu fan? A cpu heats up extremely fast. You need to start with the basics. Break the unit down to a base unit, meaning remove all devices, this is your starting point. It sounds like the power supply is fine, I would lean toward the system board itself.

 

While that may be true, if it ain't got no power at the end of one of the leads, what good is it at all. I would at least make sure that there is power at the end of all the leads for sure.

 

Thanks for all of the recommendations. I think that the possibility that the PSU was bad doesn't fly - I connected another PSU and had the same issue. The CPU looks fine and I did follow all of the suggestions posted here, so I have to conclude that it's the MB. Since I purchased it locally I will go to the store tomorrow to get another one. I will post an closeout response if the new MB works - once again thanks for all the help!