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scottmuir424 · 15 Jun 2012 at 10:54

as some people know i got an asus p9x79 board and couldnt get the board to post, had the cpu tested and working fine, the memory was from my 2700k setup (samsung green) and psu is my corsair hx850 all of which was working.

When the power supply was switched on i got the standy power led on but would do anything else, as all the other components were working in my other machine and tested on friends pc i put it down to a faulty motherboard, contacted OCUk to get the board returned and order the pro version of the board, arrived this morning connected all up only to discover it still has the same issue, both bios's were updated on the boards via asus bios flashback to rule out bios issues, contacted OCUK technical chap suggested a compatability issue with the corsair HX 850, going to test my psu on friends i3960k setup to see if it powers it up.

When testing motherboard had it on cardboard box with 2 slots of ram in tried suggested dimm slots and slots recommended by OCUK to no avail, had 1 fan connected to fan header on board, nothing connected other than 2 sticks of memory and 1 fan nothing else no sata etc but nothing seems to work

Anything i could try

any help is much apprectiated

just curious as to whats stopping it from functioning

chippy08 · 15 Jun 2012 at 11:02

I take it you have your cpu fan connected on the board but try with 1 memory stick and make sure your power switch that goes to your motherboard is correct way around.

scottmuir424 · 15 Jun 2012 at 11:05

Asus pro has onboard power switch had cpu fan connected, ocuk techy told me tht sb-e needs 2 dimms to run but tried all different configurations, this 1 got me stumped.

mmj_uk · 15 Jun 2012 at 11:12

Which sockets are you plugging the memory into? the manual recommends B1 & D1 for two modules.

What memory do you have?

chippy08 · 15 Jun 2012 at 11:16

I take it you have your 12v 4pin/8pin cable connected to the board.

chippy08 · 15 Jun 2012 at 11:18

mmj_uk said:
Which sockets are you plugging the memory into? the manual recommends B1 & D1 for two modules.

What memory do you have?

He has (samsung green)

mmj_uk · 15 Jun 2012 at 11:19

chippy08 said:
He has (samsung green)

No problem there then that's what I have.

scottmuir424 · 15 Jun 2012 at 11:19

Using those dimm slots, memory is samsung green its out my i7 2700k setup so i know rams working just whether its compatible

mmj_uk · 15 Jun 2012 at 11:34

It should work that's the memory I'm using on my P9X79 Pro, are you able test with 4 DIMMS? the only thing I can think of is the board has not been thoroughly tested with only two.

NXZT · 15 Jun 2012 at 11:47

are any of the mainboard diagnostic LED's on...CPU, DRAM, VGA? If you have a big CPU cooler try to check behind it (as the CPU led will be pretty likely covered by it).

scottmuir424 · 15 Jun 2012 at 11:57

No onboard leds light up all i have is power and reset switch illuminated

mmj_uk · 15 Jun 2012 at 12:04

Did you test the boards before updating them using Asus flashback?

wazza300 · 15 Jun 2012 at 12:33

i would set it up outside of your case,on wooden/cardboard surface

you could have a short circuit somewhere

Leeroy123 · 15 Jun 2012 at 12:47

Although you know the memory isnt faulty, are you sure the memory slots on the new board are not faulty?

Devrij · 15 Jun 2012 at 13:14

Maybe just to rule it out, test your PSU with a multi-meter if you can borrow one? It seems too much of a coincidence to have 2 boards with the same issue.

scottmuir424 · 15 Jun 2012 at 23:37

Did you test the boards before updating them using Asus flashback?

tested before and after updating bios still no boot

i would set it up outside of your case,on wooden/cardboard surface

its just sat on the mb cardboard box still no booting

Maybe just to rule it out, test your PSU with a multi-meter if you can borrow one? It seems too much of a coincidence to have 2 boards with the same issue

as in what kind of testing, the psu is currently running my i7 2700k setup with watercooling so plenty of fans etc and having no issues just wondering if its a compatibility issue with psu

scottmuir424 · 16 Jun 2012 at 10:53

could it be possible that the corsair hx850 be faulty in that its supplying sufficient for the i7 2700k setup but when i try for the 3930k setup its not producing enough juice on the 8pin connection which feeds the cpu side

pctestcard.com · 16 Jun 2012 at 17:01

Is there any beep sound with the RAM removed?

I would suggest we try other PSU.

Hope this helps.
Bill
Tech Manager, WPTINC

mmj_uk · 17 Jun 2012 at 02:04

Have you tested with 4 sticks of RAM yet? like I said it might be compatibilty issue I would assume that these motherboards are not that heavily tested with all different types of memory in only dual channel mode.

8 Pack · 17 Jun 2012 at 10:12

scottmuir424 said:
Asus pro has onboard power switch had cpu fan connected, ocuk techy told me tht sb-e needs 2 dimms to run but tried all different configurations, this 1 got me stumped.

Incorrect.

SB-E needs one dimm, furthest socket from CPU, either side to post. I would try reseting the bios and going with one dimm. Also try a different DDR3 dimm if you have one.

24gb??? also this is like 6 sticks ??? that snot optimum at all in this build 4 or 8 for quad channel once you get it running 24gb= pointless.