Enermax Galaxy 1000w + GA P35T DQ6 + EVAG ULTRA 8800 posting problem.

[cerveau]

Hi, Ive just built my new rig which has weird problem, it worked fine for about a week

but now it wont boot up first time, it always takes a couple of attempts.

On a cold boot boot, the case fans spin, the GFX card fan spins but there is

no display.

this new PSU has the power guard facility with a reset button, LED + buzzer.

The buzzer is silent and the LED is green, so its detecting no power problem.

The case doesnt have a speaker so I dont know if there are any POST beeps.

I can tell if its going to boot or not because the USB mouse and keyboard dont

light up if its not going to boot, as though its halted before its got as far

powering the usb devices.

I can press the case power button quickly to turn it all off and restart it,

then it will boot up completely normally, the OS doesnt activate safe mode or

show any evidence of the improper start, becuase it all happens before the POST.

Ive read on other forums about combinations of enermax galaxy psu's, 8800 cards

and P35T DQ6 mobos where the pc refuses to POST with PCI- Express cards installed

http://forums.overclockers.co.uk/showthread.php?t=17790001&highlight=enermax+galaxy

My gfx card has 2 6p power connectors, the PSU has 2 native 6p power adapters,

should I use the native 6p connectors or attach one of the modular 6ps so that

the power requirment is more split?

Ive taken the PC apart a number of times but I cant eliminate this problem.

Ive tried many different BIOS settings including reseting the bios and running

optimised defaults, currently Ive manually set the PCI freq to 101 as opposed to

AUTO, I believe that the card needs 100.

Why it worked fine for the first week is eluding me, obiously something has changed

in that time.

Its one of those wierd problems.

Thanks for your time

 

[cerveau]

My pc details are

Intel QX6850 @3ghz

Gigabyte P35T DQ6

EVGA 8800 Ultra Superclocked

4Gig DDR3 Corsair

Samsung 500gig Spinpoint

Tuniq Tower cooler

Enermax Galaxy 1000w

Creative X-Fi Elite Pro

Dell 2405 FWP

CoolerMaster Evo 830 "Nvidia"

Vista 64 & XP

 

[FragTek]

Out of curiosity have you checked to make sure you are running the newest BIOS release for your motherboard?

If you haven't tried already I would use some of the power cables included with the video card rather than just using the connectors from the PSU, we just had a lad with a problem caused by this. Sounds strange I know, but worth a shot just to eliminate that being the problem.

I've also heard of problems in general with the Enermax PSU's that have the power guard setup. Do you have a spare PSU that you can slap in just to test, or borrow one from a friend? Somehow I have a suspicion that your problems are being caused by your PSU.

 

[cerveau]

Thank you for the vey quick reply.

I have the F4 BIOS update which is the latest one which fixes

PCI device option ROM compatibility issues.

There is a futher BETA BIOS for 45nn Yorkfield which I havent used.

http://www.giga-byte.com/Support/Motherboard/BIOS_Model.aspx?ProductID=2636

I will try the power cables that came with the card, I did discard them right at

the beginning because I assumed that the this brand new PSU with its dedicated

6p PCI-express power connectors would be better suited for the job, but as you

say there appears to be an issue with the Power Guard ability of the psu.

 

[cerveau]

Fingers crossed but this problem Ive had for 3 weeks might be solved,

and I had the solution in front of me the whole time.

In the Enermax PSU box was a "special" cable and piece of paper which

I didnt read.

If I had of read it, right at the start I could have avoided the last 3 weeks

of pain.

It seems there is an issue with Enermax Galaxy PSUs and Gigabytes P35T DQ6

and P35 DQ6.

The issue is to do with "Special current timing requirements" at power up.

In case you have you such power up problems, use the enclosed special

motherboard adapter. - Thats what the paper said.

The cable is a 24 pin and fits between the native PSU 24 pin motherboard

power cable and the 24P motherboard connector.

It has a 4p Molex (connected by only 2 yellow) attached to it, This 4P with only

2 yellow wires fits into any normal PSU 4P molex, then you connect another

PSU 4P molex from the same cable into the additional power 4P molex on the

motherboard.

Ive added this cable as per the instructions, and my PC now powers up first time.

I just need to test for another day or so to be absolutely certain but it

"seems" to have done the trick.

Thanks to the Enermax boys, Im just relieved to have it power up first time now.

Cheers for your help in this

 

[FarFarAway]

Yep that's correct. Soz I didn't see this thread earlier or I would have solved it earlier. Gigabyte's mobo's always seem to have weird power arrangements (not as picky as DFI boards though)

 

[cerveau]

Yep that's correct. Soz I didn't see this thread earlier or I would have solved it earlier. Gigabyte's mobo's always seem to have weird power arrangements (not as picky as DFI boards though)

No worries, its my fault for not reading the paper, infact I only found it today

amongst all the other manuals, cables etc I got when I bought all the parts

to build the pc.

They were all in a pile and I decided to look through every piece to see if Id

missed anything, I could have kicked myself when I read the innocuous piece

of paper and looked in the enermax box and found the "special" 24P cable.

Im just glad its working now )