Asus P7P55 + Intel i7 860 issues with 8GB RAM

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I'm trying to find a solution concerning the  issues at the cold boot (BSOD)
on a brand new machine assembled on my own and running under Windows7/64.
This below is the hw.:
Motherboard Asus P7P55D
CPU Intel i7 860
CPU cooler Scythe Samurai ZZ
PSU Corsair 750W
RAM 4x2 Corsair TW3X4G1333C9A.
Graphic card nVIDIA GEFORCE 9800 GT

I tested the machine with tools as Memtest, OCCT, & Cpu-Z without having any
error concerning the mobo and the rams so, I'm convinced that the issue is
in the type of RAM.

Could you please suggeste to me which set in the Corsair rams, can be
compatible with th a.m. hardware?

Looking forward for a reply I remain.



Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

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How did you run all those tests with a BSOD ???

Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

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Apologize me if I wasn't clear, but English is not my language.
I forgot to write that, after the first BSOD, I ran the boot again. This
time the system went in safemode from where I choiced for a system restore
and the machine started functioning without issues so I could use the
testing tools.
This kind of issue appears only when I start the pc already cold, I mean
after that it remains at least a couple of hours switched off.


Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

On 9/13/2010 9:05 AM, Peter & Pan wrote:
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I would suggest that you look at what the power supply is
doing at cold startup. You'll need a VOM or power supply
tester but weirdness on the supply could cause your problem.

Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

On Mon, 13 Sep 2010 11:57:02 +0200, "Peter & Pan" <nicola.prisco[NO
SPAM PLS]> wrote:

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I wish I could help you more, but I would suggest you borrow or make
some boot CD's and see how the system boots in the morning cold with
them.  Lately because a friend has a virus, I've been downloading
antivirus boot CD's and they are usually free, if you have a cd

Bit Defender Anti-Virus Boot CD is especially good because it says it
has -- I havent' tried it yet -- the ability copy files from a
virus-disabled computer to a flash drive, a good CD to have around.
I diddn't notice if it works on 7.  

Panda has a boot cd too, and Kaspersky.

And there are probably other kinds of CD's one can boot from.  

If your computer is new enough the Bios can be set to boot from the
USB, and in that case if you had a USB harddrive, you could have
another OS or an image of your OS to boot from.  

Before assuming that your memory is at fault.  Especially since your
memory passes the memory tests.   And apparently works fine when it
does start.  I don't know much about memory but if it does all these
things, I'd be surprised if its the memory.

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All the Asus mobo manuals are online, plus there is an asus newsgroup,
which, no offense guys, ought to specialize in your kind of question.

(I don't think Asus was the one, but once I couldn't find a manual for
something in the American part of the website, so I picked other
countries or regions at random and two choices later I found the
manual I wanted. )

The manual says is on the Asus page but the first hit I got was That couldn't be
right.  This is better.
I can't seem to select and copy from this.  Is that possible?  It's
labled "Secured".

But regarding memory it says Refer to or this manual for
a QVL, Qualified Vendors List.   I thought Corsair was an airplane,
but I still don't think the memory is the problem.  Well, it does have
four or more entries for memory in the charts, but I can't copy and
paste so you'll have to look yourself.   Still, that a particular DIMM
isn't "Approved" doesnt' mean it won't work fine, does it?  Why are
you so convinced it's the memory.

My problem has been that I can't tell anything about memory by looking
at the few numbers on a DIMM.   Will those numbers yield informative
results in a google search?  (The only time I tried this, I took out
the Simm and it was actually labeled in detail, how many bytes and
what speed, so there was no need to google, but other times there was
no informative label.)

But I don't know much about this all.  I know more about English and
that is the reason I posted, since you say that English is not your
native language.

I like your next line below and its classic style, but you should know
that it is meant to be the first part of a sentence.  Usually I think
the rest is put on the following line, as you have it, but maybe I'm
wrong and it's on or can be on the same line.

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So it would be:

Looking forward for a reply, I remain

Yours truly,


Or: I remain your faithful servant,  [or: your humble servant, or your
grateful servant, or maybe grateful admirer, etc.]

Which I think applies even when there is no servant relationship, but
might logically require some kind of relationship.  Like young man
hoping to learn from the wiser older man he has written to.  I'm not
sure, about this.

But saying, "I remain thanks" doesn't make a good sentence.

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Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

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thank you very much indeed for the kind and exaustive reply.
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The machine is completely clean. Inside,  the Karsperky antivirus does very
well its job.

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Looking around, and more carefully in the Asus and Corsair site, I found
that those DDR3 cannot work fine if are mounted on the P7P55D. It was my
fault when I decided to mount my computer. Because my sight is weak (I'm not
very young, only 64 yo :) ) probably I made a mistake in the choice of the
RAM being confused by the multitude of signs and acronyms.

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I checked on the Asus newsgroup and I found that these could be good for my
because I found the mobo but nothing regarding the cpu i7 860 furthermore I
sent a query to Asus  asking about it  and if I could mount a set of 8 GB,
but I'm still waiting for the reply. The problem is that I'm in hurry to
have the machine running fine because i must finish some jobs they require
64bit and a good amount of RAM. In this case I must give back the wrong RAMs
to the dealer who must order the proper ones, and this matter takes time
because I live in a small touristic village of the South of Italy.

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Right, these are  the only manual I consulted before to buy the mobo,
for Corsair, but they use different signs of the Corsair DDR3

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Because the kind of error prompted on the BSOD. Then I consulted with some
friends more experienced than me in these matters on an italian newsgroup
about hardware, and they confirmed my suspicions.

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I agree. Infact for me is the first time that I see a package of RAMs
without a data sheet. In the past I used tu buy Kingston and the have a
complete datasheet supplied.
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I do really appreciate your suggestions, it was a mistake caused by an
attempt to be less official because we are in a newsgroup and mine was a
post not  a business  letter ;).

Sincerely yours,


Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

Peter & Pan wrote:
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Try one stick of RAM at a time, then boot the computer and see what happens.

When you get the BSOD, write down all the numbers and information. If the
error each time, is consistently in the same code module, then that code
could be responsible. If the error is in a different code module each time,
it could be a problem with the RAM. Memtest is not a complete test for
RAM, and does not provide enough stress while testing.


Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

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Hi Paul, thank you for the suggestions.
I really would try to follow those strictly. The problem is that they
requires a lot of time to have proper results, because to induce the issue I
must wait at least 2 hours, among the four tests to cool the pc. and try
different slots for each simm.
Btw I have here a copy of the error prompted.
Stop: 0x0000.....7E (0xF.....C0....5, 0xF.....8000C09BB74, 0xFFFF8802B39968,
All the errors, in ten days of use,  because I switch the computer early in
the morning and I switched off late in the night, start with Stop:
Tomorrow at the switch on of the pc, I will write the errors and later I
will post here again.



Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

Peter & Pan wrote:
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    "There are numerous individual causes for this problem, including hardware
     incompatibility, a faulty device driver or system service, or some software
     issues. Check Event Viewer (EventVwr.msc) for additional information."

One problem with that error, is the STOP message may not have
a device driver name associated with it. You may need to look for a minidump
file (.dmp) and get some info from it, to see what software was involved.

I'm not up on all the details of BSODs. It is possible there might be a
minidump (like, a 64K dump file) created by the error. It may also be possible
to get a larger dump file than that. And then, you need tools to decode the
dump information. To get all the information, you may need a folder with
symbol information in it (about 2GB download from Microsoft). So you can
expend a lot of time, if you wanted to extract as much information as possible
from a crash.

I have a tiny tool here, which is installed in

    C:\Program Files\Debugging Tools for Windows (x86)\dumpchk.exe

and that is what I use to look at .dmp files.

You could start here, as this download allows you to select just the parts you
Once you run the download/installer tool, there may be an entry in there labeled
"Debugging Tools for Windows", so you can get a few tools. I think this is where
got mine. You still need to use search on your computer, and see if there
are any .dmp files to look at, and whether the date on the file is recent or not.
My .dmp files here, are 88K in size. I don't know if kernel and user space
dumps, use the same file or file format or not. This is just a tool
I've played with.


Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

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Hi Paul,
precious suggestions are yours :).  Using those tools I will be able to have
a clearer view about the issues, eventually.
Btw, last night I checked on the Corsair' site and I found that the DDR3
good for my cpu are the CMX8GX3M4A1600C9, so later I'll call the dealer for
the replacement.

I will update later about the tests.

TY :)

Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

Peter & Pan;1247540 Wrote:
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Hi Peter & Pan,
I'm fighting against a very similar issue here with this

Core i7 860
4x2GB ram Corsair CMX8GX3M4A1600C9

My problem is: at _cold_boot_ the system _never_finds_all_8GB_, it only
manages to see 4GB ram. When I reboot the machine, it performs a hot
boot and all my memory is correctly recognized.

As you can see my mainboard is from ASRock and actually, I get no BSOD,
but I suspect my issue could be strictly related to what you reported

I've tried mainboard BIOS update, switching ram sticks and dimm slots,
reinstalled my cpu... everything goes nowhere and I still get the

I've written about it in ASRock official thread over at ''
( ) and
opened a new thread on 'TweakTown Forum'
( ).

I was suspecting a faulty mainboard but I can see a lot of this
"strange" issues occuring with other mainboards too, so I really can't
figure it out at the moment.

As you noticed, my ram is what has been suggested to you for
compatibility sake, in my case I dont' know whether the problem is with
the ram or a damaged memory controller on the cpu or what else, I hope
to find a solution I'll be pleased to share with you!

Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

Hi Paul,
I downloaded from the link below the set of tools.
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Could you be so kind to explain me how I can use WinDbg?
I opened File-->Open crash dump and at this point I stopped then  I made a
search using a fantastic and faster than light sw called Everything, I
typed .dmp it searched in the entire pc for that extension but no dump files
were found.
Did I act correctly?
Another question, there is a way to memorize the BSOD? or I must use my
digital camera to capture the blue screen?

Thanks for your help.


Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

Peter & Pan wrote:
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To stop the automatic reboot, when the BSOD happens, visit:

    Start : Settings : Control Panels : System : Advanced : Startup and Recovery
: Settings

        untick Automatically restart

and then the BSOD will stay put. Then it will be easy to copy.


At the bottom of the same control panel, is "Write debugging information",
with options such as "Complete memory dump". That could be a couple
gigabyte file, but would contain all necessary information. I thought one
way the computer can do that, is to use the pagefile if it is big enough,
and store the dump there. This article tells you, that you need to make
the pagefile one megabyte larger than the physical memory, so a complete
dump will work.

I've never used Windbg, because I don't have any crashes to work with.


You can learn more about windbg here. Some of the references at the end of
the article may help you.


Apparently, WinDbg can fetch symbol tables on demand (and then store them in
a cache folder). The operating system code files are stripped of symbol
table information, and you can get the symbols from Microsoft. The following
procedure, allows you to fetch all the symbols for the executables
in your OS, ahead of time. But this is unnecessary, if you're using WinDbg.
What is useful, is at least setting up a place to store the symbols, such
as steps (1) and (2). For some reason, when I tested windbg, it ignored
the NT_SYMBOL_PATH I had defined. Step (3), is if you want to fill your
symbol table folder, in advance of any crashes.

1)   System environment variable ==> _NT_SYMBOL_PATH
      Value ==> SRV*C:\WINDOWS\Symbols*

2)   Create a folder C:\WINDOWS\Symbols to hold your symbols

3)   Run SYMCHK (symchk.exe is in the same folder as windbg.exe)

      symchk -v /r c:\windows\system32

      That will return results such as -

      SYMCHK: FAILED files = 360
      SYMCHK: PASSED + IGNORED files = 6869

It will take quite a while to run symchk. My Symbol folder is now
about 1.5GB in size, so you'll need a high speed Internet connection
to do "symchk" in reasonable time. In the above command example,
symchk will download a file from Microsoft, for each code file in
the system32 folder. So it is going to download 6000+ files, and
chew up disk space.

As an example of one entry in the Symbols folder


          userenv.pdb                       1395 KB      4/15/2008

userenv.pdb would be used to resolve symbols for subroutines running
in userenv.dll . And userenv.dll is part of Windows.

So far, I haven't had an opportunity to get any value from the
Symbols folder I added. I'm still waiting for a crash.


So your first job, is to figure out how to get a dump file to
work with.

I would sooner use something like dumpchk, than have to use the
debugger. I've had relatively poor luck with debuggers, and at
least 50% of the time, can't figure out how to run them :-)


Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

On Mon, 13 Sep 2010 05:57:02 -0400, Peter & Pan <nicola.prisco[NO SPAM

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Check the sticker on the power supply to see what the max
output is on the +12V rail.  If it's less than 30 amps,
my guess is that the power supply is slightly overloaded,
causing the problem on a cold boot, but appearing to work
ok on a warm boot.

I had a similar problem last year with a 9600GT.  The pc
would spontaneously reboot at random intervals.

In my case, it became clear that it was a power supply problem,
as the system would not run with three usb devices connected.
Any two of the three was ok, but all three was just too much.

Replacing the power supply with one rated for 52 amps on the
+12V rail fixed the problem.

Regards, Dave Hodgins

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Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

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Hi David,
power supply was the first thing I checked, testing the PSU. All the
Voltages were OK. Then I replaced the first PSU I mounted (500W) with a
Corsair 750W and the issue is still there.

Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

On Tue, 14 Sep 2010 02:28:04 -0400, Peter & Pan <nicola.prisco[NO SPAM

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Just because the total wattage is 750W doesn't rule out the +12V rail
being under powered.  Check the rating.

Regards, Dave Hodgins

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Re: Asus P7P55 + Intel i7 860 issues with 8GB RAM

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Thank You, Dave,
here the value checked with Everest, +12V --> 12.38V.

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