Chris Swinney wrote:
Quote:
> Richard,
>
> Many thanks for this and don't worry, I know about the issues of matching
> RAM. The three new modules are all identical from the same manufacturer. The
> are all the same size speed and density, that is 1GB DDR 400, 64MBx16 running
> at CL3. the manufacturer is Hynix.
>
> The original RAM was two sticks of Crucial memory, this time 512MB DDR 400,
> CL3 memory.
>
> There are a totla of 3 slot on the MB, and it is capable of supporting 3GB
> max.
>
> The strange thing is that I can put module in differnt order and combination
> and all will work fine (as long as I stay below the 2GB limit). I can mix and
> match the two manufacture with no issue - i.e. I can run 2x512MB and 1x 1GB
> so using all slots and all is OK. As soon as I try and run 3x1GB or 2x1GB +
> 1x512MB then vista will not load - but XP will with no issues.
>
> Chris
>
> "Richard Urban" wrote:
> Quote:
>> I have seen this when the RAM sticks are not identical (same manufacturer,
>> same date, same batch code and especially - with the same timings).
>>
>> If you have two sticks in there now that use a fast RAM timing, and the bios
>> is set to this timing, and you then put in a stick with slower timings - the
>> computer may give you all sorts of errors. Yet, each stick of RAM is good.
>>
>> This is why it is good to always buy RAM for a manufactured computer direct
>> from the computer manufacturer. Get RAM for your HP from HP etc.
>>
>> If you build your own computers, buy all of your RAM at the same time, from
>> the same supplier. This way you have a better chance of getting RAM that is
>> from the same manufacturing batch. If you buy two sticks of RAM today and go
>> back to the same supplier next week to get another "identical" stick - you
>> "may" be out of luck. The new stick "may" just be different enough to cause
>> errors.
>>
>> Laugh if you must but my parts cabinet is loaded with hundreds of sticks of
>> used RAM from computers that had a RAM mismatch.
>>
>> --
>>
>> Regards,
>>
>> Richard Urban
>> Microsoft MVP Windows Shell/User
>> (For email, remove the obvious from my address)
>>
>>
>>
>> "Chris Swinney" <ChrisSwinney@xxxxxx> wrote in message
>> news:84744106-6938-4C31-A751-15D619A97936@xxxxxx Quote:
>>> Hi all,
>>>
>>> I have an issue with an upgraded system using a DFI NF Ultra 11
>>> motherboard
>>> and 3GB of RAM. Vista simply will not boot, either from the default
>>> installation or from the CD. If I allow Vista to boot normally (or via the
>>> CD) it will only get to the initial black screen with the time line bar at
>>> the bottom, yet the bar will never show and the machine will just hang. If
>>> I
>>> boot the default installation in safe mode I get different BSOD stop
>>> messages
>>> such as 0x1000000a.
>>>
>>> My first instinct was that the memory was faulty, however, I ran Windows
>>> memory diagnostic and Memtest86+ with no issue. I then booted into Windows
>>> XP
>>> (on another partition) which registered the 3GB of memory and ran Prime95
>>> also with no issue.
>>>
>>> Anyone have any further thoughts or ideas of how I might further test the
>>> memory full in XP.
>>>
>>> Thanks
>>>
>>> Chris
>>>
>>
Some older ASUS motherboards had a hardware problem similar to this and
there's never been to my knowledge been anything on the official site. I
found the info using Google and it was in some newsgroups / forums but
it seems like the posters were not connected so it was not common
knowledge. 1.5 GB okay, 2GB (Stated by Asus as the Max) reported about 5
bytes
Bios update no good either.