Re: Memory Limit on P4P800E BIOS?

In article <1130003487.299494.150310@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, "JG"
<julesgilson@xxxxxxxxxxx> wrote:

> I have just installed an additional 2GB of RAM on this board - and
> outside of any Windows issues the POST from the BIOS only reports
> 2559MB. Is this the limit of addressable memory with this config or
> will a later BIOS fix it?
>
> Mem config 2x512 Kinston + 2x1024 Kingston all 400 CL 3
>
> 3.0 Prescott
>
> BIOS V1002.002
>
> I know there will be windows issue too - but if I cant get the BIOS to
> see it then....
>
> Any help appreciated.
>
> Jules.

2559 = 2048 (i.e. 2GB) + 511 (i.e. only one of two sticks showing)

There could be something up with one of the DIMM slots. Take out
all the memory. Using one stick, move the stick from slot to slot,
and make sure the motherboard reports the memory for that DIMM.
If you use a 512MB DIMM for the test, it should read that amount
for each of the four DIMM slots tested.

If you find a bad DIMM slot, plug and unplug the DIMM in that slot
a number of times (say five times), to try and clean any contamination
off the contacts. If the DIMM slot still does not work, do _not_
attempt to clean it. (I say this, because most cleaning materials
you can get your hands on, as a consumer, will leave a residue on
the contacts, and that could cause future issues. And you could easily
bend or distort a contact in the socket by futzing with it.) RMA
the motherboard under warranty and get it fixed.

Memory should only be added or removed, with the computer unplugged.
At the very least, you do not want any +5VSB running inside the
computer while changing memory - always verify that the green LED
on the motherboard surface is extinguished, before adding or
removing DIMMs.

If it turns out that one of your DIMMs is bad, then you will have to
take that up with your memory vendor.

Paul
.

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