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Boot Message

I purchased a new comp. last week.A P3 500. I bought it from a small local manufacturer with a very good reputation.
When I boot up the following message appears immediately after the processor and bios info. "SERIAL PRESENCE DETECT (SPD) device data missing or inconclusive.
100 Hz memory assumed"
When the comp was built I supplied an extra 64 meg dim chip, simliar to what was already installed. The manufacturer tells me the message means that my ram is a different brand to his.Nothing to worry about.Windows recognises the ram and there are no problems.
I would just like verification that this is correct.
Thank you, Jack Gruschow
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ric49799
Asked:
ric49799
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1 Solution
 
ric49799Author Commented:
Total ram is now 128mb.what does 100hz assumed mean?
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kind4meCommented:
100 is probly your bus speed. It sounds like you have 2 differt tpyes of ram.  You should go into the biosand see what your ram and bus and processor speed is set to.  

Hope this helps
as always
Mr Happy
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rayt333Commented:
Try removing the one Memory and see if error goes away.
You may be using 66mhz memory with a 100mhz system, some manufactuers mislablel the memory to get more money from it, it could possibly be 100mhz that is just not up to par with the other memory.
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faroutCommented:
you can be sure that the module is a 100mhz if the comp dosent crash after a very short periode of time
a 66 mhz module will not work very long in a comp whit the bus freq set to 100 mhz

so if this is true your manufacturers
answer is correct.

Farout
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rayt333Commented:
farout
You are new here so Welcome, the protocol here is to post comments to help solve the problem, the questioner has the option to accept any comment he\she feels solved the problem. By posting as a proposed answer you have locked the question out. And the info you have posted is not quite true either. I have seen high quality 66mhz memory work just fine in a system running 100mhz bus speed with out any crashes.
Also you have the option to change your proposed answer to a comment, please do that.


ric49799
Please reject the proposed answer and open the question back up for input from other experts. Most will not comment on a locked question. I believe you need to do some troubleshooting on this system and see exactly what is causing your problem.
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ric49799Author Commented:
both ram chips are pc100.The only difference is they come from different manufacturers.The motherboard has a 100 bus speed and 128 megs of ram are present according to Cmos.I was just a little doubtful about the "device data missing or inconclusive" message. J.G.
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rayt333Commented:
SERIAL PRESENCE DETECT (SPD) device data missing or inconclusive
If during POST, non-SPD memory is detected or the BIOS cannot determine that the memory installed meets SPD 100-MHz requirements, the motherboard BIOS will display this message:
"SERIAL PRESENCE DETECT (SPD) device data missing or inconclusive."
Properly programmed SPD device data is required for reliable operation. Do you wish to attempt to boot at 100MHz bus speed?
 Y/N [Y] Type [N] to shut down"
Thereafter, while non-SPD memory remains present, the boot screen will display the following message:
"SERIAL PRESENCE DETECT (SPD) device data missing or inconclusive. 100MHz memory assumed."
SPD 100-MHz memory may not be readily available in some locations. Also, some operators may not have critical data integrity requirements. If SPD 100-MHz memory cannot be confirmed during POST, the BIOS will provide this information to the user and offer the option to run the system with memory that may not meet the full 100-MHz operating requirements. If the system will be used in a mission-critical application where data integrity is vital, the system should be shut down and SPD 100-MHz memory installed prior to operation.
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rayt333Commented:
Serial Presence Detect: Some motherboards are now being created that require the use of special SDRAM modules that include something called a Serial Presence Detect (SPD) chip. This is an EEPROM that contains speed and design information about the module. The motherboard queries the chip for information about the module and makes adjustments to system operation based on what it finds. A great idea in theory, but you won't think it's great if you buy an SDRAM module without the chip on it when your board requires SPD...
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rayt333Commented:
So here is your answer:
If the system will be used in a mission-critical application where data integrity is vital, the system should be shut down and SPD 100-MHz memory installed prior to operation.

You can reject the proposed answer and accept this if you will.
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ric49799Author Commented:
At least I know a bit more than I did.As I do nothing critical I will carry on.Thanks to everyone.
Jack Gruschow
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rayt333Commented:
Why did you accept that as the answer?????

I gave you the info you wanted and you accept the BS answer???
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ric49799Author Commented:
Sorry I thought I was accepting your answer.It was your answer I was replying to.J.G.
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rayt333Commented:
Let this be a lesson to you, when you ask a question, if someone post an answer before the problem is resolved then REJECT it, even if it may be correct, you can always ask them to repost it later if it proves to be the correct answer. This will encourage more "Newbie's" to post comments instead of answers.
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faroutCommented:
rayt333
if your 66mhz block works as a 100mhz
why change it

i am very sorry you can call me a newbie if you want

i teach programming c++ java aswell
as os
and have been doing so for 5 years
i have a datamatic degree

Farout
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rayt333Commented:
farout
Am I supposed to be impressed??? The simple fact is you are new here and you got credit for a wrong answer??? Need I say more???

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darinwCommented:
No, there is no need to say more. Please continue your conversation on Expert etiquette in a more appropriate forum, like the lounge or the community support area.

darinw
Customer Service
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ric49799Author Commented:
Sorry,I don,t altogether understand the last three replies. Sounds like the experts are squabbling amondst themselves.
To clarify one point. I have two 64meg blocks of PC100 ram. The block that came with the comp is PC100 ram as used in the SE440BX-2 motherboard. The other block came out of my previous comp.And it has been working as 100 for nine months.
I just don't like seeing a remark about
"data missing or inconclusive" every time I boot. Thanks to you all.
Jack Gruschow
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rayt333Commented:
You will get that error message until you remove that chip and replace it with SPD 100-MHz memory
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