I have also tried to upgrade the RAM using a matched set of 1GB 4200 533Mhz DIMM DDR2 non buffered non-ECC cards. The system can max out at 2GB. The computer will not start with neither one or both of these cards installed. The bios indicates that the cards are each 1024mb as expected. What is a solution to this issue? thanks
Zero info there. no DDR makers name , nor numbers. !! hopeless.
its got 4 slots so 1 stick fails in any of the four.slots. my other shoe drops. asking that.
do the 2 originals work ok? seems not did you get a dead PC at some garage sale, I it has zero value , why spend cash on a $0 dollar PC, its junk, bet a box 2007 newer with W7 on it.
and win, something with a Future this will never have.
when did this old PC run right last, 10 years ago and with those 2x512 as it came new, had?
it will run with 1 stick but switches to single channel all by its self
but did you use Slot bank 0 first. do not guess slots use the correct slots.! they are in the manual these rules
and certified, ram, in same manual
did you ask Kingson for DDR? I bet that avoid this like the plague.
for the ram to work
they must good.
and comply with the HP spec on the
A8M2N-LA mobo. (made under contract Asus to HP)
hp manuals on this old dog are now gone.
Dont call Asus they don't support HP BIOS, ever !!!
Only ask HP, see? see why>? (we are not HP )
the real deal, HP, here, not SPAM.!!!
https://h30434.www3.hp.com/
2 GB is max but I bet that is 4 x 512, right?
think back 10 years ago to what was THEN.
rules. in order
pin count and notch.
DDR2 voltage spec, some are wrong. (odd ones exist)
correct speed ddr and sizes and density, rules.
The sticks must be SPD identified by BIOS
then, not violate the mmc rules in the CPU.
the AMD chip runs them directly from CPU chip.
it must like them. the AMD MMC must like your sticks.
then BIOS, if must recognize them if not it will never work. (or goes to low size as yours did)
hint hint on that fact.
seem to me it dont by your admission.
then XP (the virus magnet why in the world run any dead OS
there is no MS or HP support on that for 3 year now)
no PNP support and over 700 exploits in XP.a horrid OS .
but that is later. after RAM starts working...
The memory sticks havea SPD. chip
BIOS when you boot any PC scans this wonderful chip
if you put say a newer DDR say 10 years too new on any old PC, and the the changes are radially different. (after all in 10 years Mr,Moore's laws on memory evolved,"density changed" (hint)
BIOS LOOKS at all this and will in fact get confused easy.
this is very common. doing new on old.
(new sticks on old MOBO)
OP never told DDR source , age or model of sticks,so... help near zero, just how it works here.
if curious and like to peel the technology onion deeper, it is no secret , these data fields seen here can confuse the BIOS, easy, ponder it and learn. ( there is a reason for all this)
The BIOS does not want to damage parts.
Why would it do that? if it can NOT RECOGNIZE KEY PARTS? (so it defaults to slow and cool , see?)
https://en.wikipedia.org/wiki/Serial_presence_detect#DDR2_SDRAM
anything in the SPD can trip BIOS to default.
even buying ECC ram or 10 other things wrong
look on the kingston site.
see all that complexity just on DDR2
ever wonder why?'answer it is complex.
there is no 1 DDR2 1GB stick there are many versions made in fact.
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Most motherboards need to be told they have updated memory installed. This is either done by Contacting the motherboards manufacturer for upgraded bios that will be needed for the motherboard to receive higher RAM cards. These should be available through the "support" section of their website. If you own a Dell or HP, their bios are usually locked and must be updated this way. If your bios are "cleared" you will have full access the change the RAM MHz and RAM value settings for the board to match your new RAM cards manually. Open the PC's BIOS and search for a RAM frequency and value settings. The precise location varies depending on your system, but it's often in an "Advanced Chipset" section, on a page that mentions RAM or DRAM configuration. Modify the RAM frequency and value to match your new cards. Your new cards will have their MHz rating and size either on the box, the included paper work, or on a sticker or indicator stamp on the RAM card itself.
Exit the BIOS with the "Save Settings and Exit" option and let your computer restart.
If bios are compatible or updated and still not booting. Try installing only 1 new card into slot two at a time, leaving 1 of the original cards in slot one. Turn on the machine and go to your bios and change the values only for card 2, save and reboot the machine into bios once again. Then change the value for slot one to match, save and shut down and install the other new card into slot one.
Asus will not answer you.
only HP can upgrade BIOS on any HP PC.
the built under HP contract, and is totally custom to HP PC,
its that simple for sure.
and HP does not support PCs this old, FACT
leaving what, (upgrade the whole PC or the Mobo) or live with 1g for ever.
the bios PnP scans the ram.
and uses that to see if it supports it
and sets the speed to the lowest DDR spid chip speeds, this is automatic in PnP
if system is ok,, power ok and the 1.8v to RAM DDR is ok,, then the BIOS can scan the DDR sticks and read the ID chip there
this is how plug and play works at the bios level.
BIOS can do 2 things now, see the data
and know what it means or not.
if the stick is alien (unknown) it goes to a small size DEFAULT.
if it recognizes it, then it sets clocking based on that, or as the MMC in the CPU dictates. which ever is slower wins.
that is how the PNP works.
study
SPD
read page 6
http://rmroberts.com/FTP_files/DDR1DDR2D...
read carefully, this is how BIOS scans the DDR and finds what is there.
some DDR are alien to HP BIOS, for ever.
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SOURCE: I just recently upgraded my Compaq HP D530 CMT VGA
On the start menu, under "Help and Support" you'll want to bring up your system info. Here it will tell you exacly what your present motherboard will accept for memory and the exact configuration.
SOURCE: HP Compaq dx2200 doesn't detect RAM
Go here and supply the info for your system or mboard model to
determine which G.Skil module part numbers are listed as compatible with
your system or
mboard:
http://www.gskill.com/configurator.php
If your
system model or mboard model is not listed, or if it is listed but they
don't list the module part number(s) you have, there is no way of
knowing whether the ram will work properly in your mboard !!.
........
A
common thing that can happen with ram, even ram that worked fine
previously, is the ram has, or has developed, a poor connection in it's
slot(s).
This usually happens a long time after the ram was
installed, but it can happen with new ram, or after moving the computer
case from one place to another, and I've had even new modules that
needed to have their contacts cleaned.
See response 2 in this -
try cleaning the contacts on the ram modules, and making sure the
modules are properly seated:
http://www.computing.net/hardware/w...
.........
If
your ram passes a ram test, it's working fine, even if you can't
determine whether it's listed for your mboard or system model anywhere
If
you do a ram test, do that AFTER having tried cleaning the contacts and
making sure the ram is seated properly - otherwise any errors found may
be FALSE.
If the ram is incompatible with the chipset, or on more
recent computers,
incompatible with the memory controller built into the cpu, it will
likely FAIL a ram test - that is NOT a true indication of the ram being
faulty - there is probably nothing wrong with it, and it will pass the
test if installed in a mboard it is compatible with.
NOTE: Sometimes
incompatible modules (or matched pairs) won't work properly when more
than one is installed, but will pass when by itself.
........
If
you want to try a memory diagnostic utility that takes a lot less time
to run a full pass than memtest86 does, this one is pretty good - Microsoft's
Windows Memory Diagnostic:
http://oca.microsoft.com/en/windiag...
It
can be toggled (press T) to do a standard or a more comprehensive set
of tests - use the default 6 test one first - if it passes one pass of
that, use the latter one. A few of the tests in the latter set are
intentionally slower.
If you don't have a floppy drive, see the Quick
Start Information at that Microsoft link for how to make a bootable CD
of the Windows Memory Diagnostic (you need Windiag.iso - you don't
necessarily need to use the program they mention to add it to the CD).
.......
If
the part numbers of the ram modules you have ARE listed for you model,
and/or in any case. if you STILL get ram errors.....
Some ram
manufacturer's modules do not strictly adhere to the JEDEC standards
that most mboards bioses use to determine ram settings.
In that
case, the ram settings in the bios Setup that the bios has automatically
chosen may not be correct.
Check the ram settings in your bios -
the ram voltage, and the ram timing numbers - those should be the same
as for the specs for the modules themselves. Often the ram voltage and
timing numbers are printed on the label on the modules.
If the
voltage setting or timings settings in the bios are different from the
specs for the ram, change them in the bios. The
timing numbers must be as close as you can get to the same, or slower
timings (higher numbers = slower) - you won't notice the difference the
slower settings make.
If you have a mix of different modules
-
don't mix ram that different voltages arespecified for - the bios will
force the ram to use the lowest voltage, if "by spd" or similar is used
(default settings) - ram that a higher voltage is specified for is more
likely to not work properly in that situation.
- the bios settings
must be those for the slowest timing settings of all the modules, or
slower (higher numbers = slower).
.......
G.Skil is one of the
"also ran" ram module manufacturers.
According to The Muskin web
site, some "also ran" ram module manufacturers test their ram modules
when they're by themselves in a mboard, to get the best (fastest)
timing ratings. When you install more than one of their modules, the
timing may not work properly with more than one module installed, but if
you change the timings in the bios Setup so that the timings are slower
(higher numbers) , the ram will work fine.
I have seen several
examples of people who posted on this site having to do that with G.Skil
ram.
SOURCE: Hp Compaq dx2200 MT RAM Problems
Firstly, you have to know that you can upgrade RAM as Double or Half of your pre-installed RAM. For example, like your pre-installed RAM is 256 MB, you can only upgrade RAM of capacity 128 MB or 512 MB. Secondly, check your previous installed RAM's speed that is shown in Ghz. You can only upgrade RAM to its similar speed, otherwise you get slow performance of PC.
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Hi Ricky Bresch, I want to help you with your problem, but I need more information from you. Can you please add details in the comment box? Who is the manufacturer of your RAM, and what are the P/Ns ? What was the configrtion of the original 513MB of memory ?
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