Question about HP Media Center m7250n (ED842AA) PC Desktop

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New ram recognized by bios but not by windows xp

I added two 1GB memory sticks to the two existing 512MB sticks. I put the two 512 sticks in slots 1 and 2 and the two new 1GB sticks in slots 3 and 4. Bios shows all four sticks with their correct sizes. I can boot up Windows XP but it still says I have only 1024MB of memory. How can I get it to recognize the additional memory?

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1 Answer

Larry Ng

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  • HP Master
  • 5,982 Answers

I love ram questions, (not easy)\
1
1
.5
.5
-------------
3 GB

my guess is your windows XP virus magnet is stuffed
XP is a dead OS, and has Zero support.
not does HP support it.

so what to do.
well its super easy.
1: boot to a linux live CD or stick
if linux likes it , your XP is hosed, like all are now,hopeless.!

if linux does not like the mem. then you bought the wrong ram.

try to know that BIOS does not get the final call on good mem
all it does really is PnP the spid chip there asking what i is.
and then passes that INFO data to windows.
did you run BIOS memory test? it too is crude,
in the end only a running good windows proves any memory is good. for sure loading a huge photo shop say 5 times.

the new sticks must be 240 pin, DDR2 SDRAM
PC2-3200 MB/sec (minimum)
the must match your CPU,
the Pentium D is old.
and many memory makers do not make ram to fit old CPUs.
2005 PC,a tad old no?
the best place to get it is Kingston or Crucial.
did you? or buy fleabay crapppppp


questions did you run the PC with just 1 , 1GB stick
if that fails and beeps like made the sticks are no good.
then next 1GB stick alone, beeps again, dead pC>
yup wrong DDR2.

the Intel chip you must make happy is the i945p
at its clock rates (called speed)
do look on kingston .com first.
m7350 seem there oldest one. in this line of HP PC.
good luck finding good memory.

Posted on Nov 12, 2017

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5 Related Answers

Friendajeet

Ajeet Singh Chauhan

  • 25 Answers

SOURCE: I have a Compaq Presario, model #: SR2150NX memory problem

To Be pricise ...there is no hardware problem.
The problem can be two.

1.Your computer supports max of 1.5 GB RAM.....For this check with other vendors too.

2.You have to update your BIOS.

If you can provide me the motherboard no and details i can clarify more on it

Posted on Jun 02, 2008

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Anonymous

  • 260 Answers

SOURCE: increase ram

Depending on the cost of what RAM your system uses, it may be cheaper to buy 1 stick of 1 gb or go with 2 - 512's. Either way you will benefit from the increase. When buying RAM you should install a matched pair.
You can go to Crucial, Kingston or Corsair for a RAM configurator.
Good luck.

Posted on Mar 14, 2009

antiochpc

Kevin Shafer

  • 1314 Answers

SOURCE: Can I add 1GB memory chip in 2nd slot with a 512MB chip in 1st?

Each memory slot can hold DDR PC2700,DDR PC3200 with a maximum of 1GB per slot.

So, yes, this is true.

Posted on Jul 05, 2009

Anonymous

  • 113 Answers

SOURCE: I have a Compaq Presario, model #: SR2150NX memory problem

Well in a weird situation like the one you have, i suggest inserting one of them into the Memory Bank 2 slot. After that, start up your Computer and shut it down. If it says you have 1GB then that's good. After that, put the other one in the free slot and start it up. I hope i helped, i can't think of what else would work for that.

Worst Comes to worst, just get the one that seems weird replaced with a new one from Best Buy. They should do it free of charge.

Posted on Jul 08, 2009

joecoolvette

joecoolvette

  • 5660 Answers

SOURCE: Just bought 2 1GB PNY dual Chanel memory modules

HP Support > Pavilion a1600n desktop computer > Motherboard Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00757531&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=3245022

Scroll down the page to the illustration, and photo of the Pavilion a1600n motherboard.

On the motherboard illustration where it states DDR2 XMM1 (64 bit ,240-pin module), and DDR2 XMM2 (64 bit ,240-pin module), is where the two 1GB ram memory modules go.

On the motherboard photo, it is the two Blue in color ram memory slots.

The 512MB ram memory modules go into the Black ram memory slots.
[DDR2 XMM3, and DDR2 XMM4]

The Blue ram memory slots are one Channel. (Channel 1)
The Black ram memory slots are the second Channel.
(Channel 2)

You want to keep LIKE ram memory modules in the same Channel.

If you are having problems with the PNY ram memory modules, tell me what the manufacturer code is on them.

(Or if you bought them off of a website, see if you can copy and paste the link in a Comment. Believe upper right of your page.
FixYa is constantly undergoing changes to improve the website, is why I indicate that)

You need low density, unbuffered ram memory, DDR2 Sdram ram memory.

[DDR2 at either 533MegaHertz, or you can also use DDR2 at 667MHz.
PC2-4200 and PC2-5300 respectively ]

Don't try out any high performance ram memory is my recommendation, because the Voltage required by the ram memory, may not meet the factory default voltages that are preset in your computer.

[Factory Voltage default setting for ram memory for your motherboard, is set at 1.8 Volts.
Some high performance DDR2 ram memory requires 2.0 Volts, 2.1 Volts, or even higher ]

Posted on Jun 30, 2010

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DDR RAM needs to be installed in pairs, as in if you have two 1GB sticks these would, in a four slot board, be inserted in slots 1 and 3 or 2 and 4. The other odd 512MB stick could go in any other slot theoretically speaking. But, you would be better off leaving it out. The SPD chips on the two 1GB sticks should match themselves to time at the slowest common or fastest common denominator.

There is a chance that by having the odd bank population that you said worked for awhile installed as you had, that the MB RAM slots were put under unusual voltage stess. There is a pretty good chance you can remove the 512MB stick, leave the two 1GB sticks in slots 1 and 3 or 2 and 4. But, this is VERY important: consult your board manual or access it online and read what the population requirments are for the slots as in some cases, the two matched sticks go in 1 and 2 or 3 and 4. This little oddity is found from time to time.

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Hope this FIXED, as in ANSWERED you question and was more than helpful. Should you feel compelled to rate this solution after reading, either rate it FIXED or not at all. I know its helpful by default, that's what we do here. But only a thorough answer can FIX your situation. You should be fine if you follow my instructions. But, please consult you manual.

Regards,
Worldvet

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