Re: Memory Problem w/ASUS A7V133 MB in XP Pro - repost

The CL3 stick is guaranteed to work, CL2 is not
Corsair has in the past supplied me with excellent tech support, there
response to you seems somewhat lame
& yes I ran the memory configerator & thats what it came up with.

"sced13ri" <sced13ri@xxxxxxxxxxx> wrote in message
news:eCZ6gLmfIHA.5164@xxxxxxxxxxxxxxxxxxxxxxx
DL:

Appreciate the response. Actually if you run Crucials memory check on the
board the CL-3 stick comes up first probably because it does not require a
bios adjustment. But, the following panel then lists all the compatible
sticks including the ones I purchased. I selected the CL-2 because I have
been running with three 256MB CL-2 sticks for quite some time with no
problems.

If you check the links provided by Paul in his first response as I did,
you may be surprised to find that others are also experiencing problems
increasing memory on this board. So I will keep an eye on the forums and
will try Paul's other tips as well.

Ed


DL wrote:
The crucial recommended memory for your board is CT64M64S4D75 CL3 & not
the one you gave part number for.
It goes on to say with A7V series boards CAS Latency 2 modules must be
manually set in the bios

"sced13ri" <sced13ri@xxxxxxxxxxx> wrote in message
news:edQRL0jfIHA.5752@xxxxxxxxxxxxxxxxxxxxxxx
Paul wrote:
sced13ri wrote:
Original post 3/2/08
Just checking to be sure message is up on the group. usually responses
negative or positive show up faster than two days.

Appreciate any help.

sced13ri


I seem to have a unique problem. This is a system I built several
years ago using the above referenced MB. I am running WindowsXP
Pro SP2 with multiple HDs and Optical drives. Everything runs
fine with no system problems or failures since upgrading from ME
to XP Home to XP Pro. That includes filling all three memory
slots with 256MB DIMM SDram sticks 768MB total.

The problem begins when I try to upgrade the memory using 512MB
sticks specifically listed for this MB. Twice I have tried to add
512 by removing one 256 which would bring me to 1024MB. All of
the sticks worked fine individually, two or three 256 sticks work
perfectly but, two 256 and one 512 hung the machine and it would
not boot. In fact, it would not boot with one 256 + one512.
Weird! So I returned the 512.

Thinking it might be an unusual compatibility problem, I just
purchased three 512 sticks since this board will take 1536MB
total. No go but, a different scenario with more helpful info I hope.

Again, all three sticks work perfectly by themselves. However,
when I add a second stick the correct total shows in the boot
splash screen and in the bios so I know the memory is being
recognized. But, the system returns an error message in the
nature of "Trap error 00000006" with a lot of code following or,
will boot up to the place where the vertical lines flash across
the bottom of the screen at which point the system hangs up. This
happens with any combination of two sticks.

The next is even worse, any combination of three sticks results
in no boot, just a blank screen, sometimes with a 1 delay 2 beep
code. Mostly just a blank screen, no codes. It seems my machine
is acting like WindowsME with it's memory problems but my Bootcfg
and system.ini files are clean. BTW, the AWARD beep code
description did not reference my problem.

The MB specs state that any combination of sticks in any of the
slots should work. I do make sure to start at slot 1 when
checking individual singles and combinations but, nothing seems
to work.

Sorry for the long post, it's just my attempt to provide the most
info I can. I wanted the extra memory since I do quite a bit with
photo programs and am looking for a little faster performance. I
would appreciate any reasonable suggestions related to the
problem. If it cannot be resolved, I need to once again return
the sticks. BTW, the manufacturers support system was unable to
resolve the problem either at the web site or by phone. So, here
I am, looking for help from the gurus.

Many thanks in advance.

sced13ri
I found a variety of test results, with RAM in that board, and
I cannot make sense of them all.

If you want a forum to search, you can try this one.

http://www.a7vtroubleshooting.com/forum/cgi-bin/yabb/YaBB.pl?board=a7v;action=display;num=1170622691;start=1
The Asus forum for the board, doesn't have a lot of posts, and
that is because the forum started much later than the release
of that motherboard.

http://vip.asus.com/forum/view.aspx?id=20051002003720796&board_id=1&model=A7V133&page=1&SLanguage=en-us
Like the thread in a7vtroubleshooting suggests, I'd start by
verifying the 512MB stick consists of 16 memory chips, eight
per side. That is most likely to meet the density of memory
that chipset would support. Other configurations might not
be fully addressable (not enough row/column address bits).

Certainly, a single sided memory is easier to drive, than
a double sided memory. If the 256MB memories were single
sided, then driving three of those is easier for the memory
controller, than three double-sided DIMMs.

But in the case of 512MB sticks, you're between a rock and
a hard place. That is because, if you purchased a single sided
512MB DIMM, it would be "high density" and only be half
detected if you were lucky. If you purchased the more usual
double-sided 512MB with 16 chips, it would be addressable,
but also present double the command/address bus loading.
(On higher speed motherboards, typically two of three slots
would work, and maybe putting sticks in slot 1 and slot 3
would work. Or dropping the memory bus speed, would allow
all three to be used.)

So it really depends on what the considered opinion is,
about that VIA chipset. And whether it can drive three
double sided sticks. (Maybe a review article would have
some test results.)

Not all your symptoms are consistent with a loading
problem, so I'd have a look at the construction of the
512MB stick to start. If you have URLs for the memory,
a part number printed on the memory chips, anything like
that, it would help identify what you bought. I'm not
aware of any Ebay scams for that memory type.

Paul

Paul:

Thank you for your informative and detailed response. These are double
sided 16 chip sticks from Crucial (Micron) and the part number is;

CT64M64S4D7E.16LTDY
512MB 168-Pin DIMM 64MX64 SDRAM PC133 CL2
UNBUFF Pb-FREE

My bios are set to SPD which Crucial says is part of the chips. I did
try the manual setting for CL2 but, it made no difference. I don't mind
getting into the bios but, I don't recall a setting for Bus speed. I
installed this MB using the jumper free settings.

I would appreciate any additional thoughts you might have. Meanwhile,
I'll take a look at the links you provided.

Ed


.

Relevant Pages

  • RE: .NET SUCKS --- READ FOLLOWING. MICROSOFT IS A SUCKY CO
    ... Any application that must guarantee a response 100% of the time within 1 ... PREALLOCATE all memory you need, ... If your response time requirements are 1 second, ... The app has to respond to the requests in no more than 1 s. ...
    (microsoft.public.dotnet.framework)
  • Re: is there any principle when writing python function
    ... called by that ONE function then you are a bad programmer and should ... if response: ... def choose: ... Code takes up memory too, ...
    (comp.lang.python)
  • Re: Error 2 when attempting to print
    ... Thank you for your quick response. ... I did in fact correct ... I've been running with Virtual Memory ... >installed (you can find the amount of physical memory by ...
    (microsoft.public.mac.office.word)
  • Re: Memory Problem w/ASUS A7V133 MB in XP Pro - repost
    ... The problem begins when I try to upgrade the memory using 512MB ... it would not boot with one 256 + one512. ... splash screen and in the bios so I know the memory is being ... verifying the 512MB stick consists of 16 memory chips, ...
    (microsoft.public.windowsxp.hardware)
  • Re: Behavioral Genetics: A pseudo science or real scientific discipline
    ... > associated with memory. ... Because the experimental animals performed ... > fundamental conceptual muddle of mainstream psychology. ... > to believe that STM is a loose collection of response classes that are ...
    (sci.bio.evolution)