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My laptop has 256K memory installed. I purchased 512 RAM (max I can add is 1024) and installed it in my hp Pavilion zt1230 laptop. Per Kahlon.com instructions, I cleaned gold leads with eraser and popped it into place. I turned computer on and computer will not start up. It is dead until I pull memory out. This is the 2nd time and 2nd different memory chip in tried. I verified with Kahlon.com that this is correct chip. Even though I have lifetime warranty and they guarantee compatibility, Kahlon.com told me to sell chip on Ebay. Any suggestions why this is not working in my laptop? I have the latest BIOS. Helen

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  • taxdudette Dec 06, 2008

    No, I did not remove the 256 chip. It is factory installed and I do not want to or think I should take the computer apart. That is out of my league. I went to several sites and saw how to install the add'l 512 memory and physically installing it is easy. As far as it being a high or low density, I was not aware of this. The company I purchased the memory from told me it would be compatible with my computer. Per my invoice, SDRAM SODIMM, 3.3 Volts Proprietary Design, 512 MB, PC133, Unbuffered, non-ECC. Any other ideas? Thank you very much for taking the time to respond.

  • Jay Glendenning
    Jay Glendenning May 11, 2010

    did you remove the 256MB chip?

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Is it a High Density memory? There are two different types of memory, High and Low. Low density is the universal but High density, may be cheaper but the motherboard needs to be compatible with High density memory. Although your memory fits in the slot, I think you have High density memory hence why it won't boot up and does when you remove the memory.

Posted on Dec 06, 2008

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I have a HP a1514n media system with 2 - 512 sticks of ram. I replaced one of the 512's with a 1GB stick and my system only shows 1024 ram available. I checked the settings in startup and it shows...


First of all, make sure you have the right memory - 240 pin, DDR2 SDRAM, PC2-4200 MB/sec.

Your machine should support the memory as it has two banks of 1. Sometimes it is simply a sequence problem. In older machines with mixed memory, I always put the largest and fastest in the first slot. You might try just reversing the memory.

Jul 19, 2011 | HP Pavilion a1514n (EX269AAR) PC Desktop

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I want to increase the memory ram of my lap top: HP pavilion ze4910us What kind and how much memory can I install ?


You can upgrade, have a look at the specs;

Pavilion ze4910us Memory Specifications Standard Memory 512 MB (removable) Maximum Memory 1.0 GB Memory Expansion 2 sockets Memory Comments PC2100/2700 DDR SDRAM SODIMMs CPU Type 1.4GHz Intel Celeron M 330 Model Comments 400MHz FSB Memory Upgrade for HewlettPackard Pavilion ze4910us Laptop, the HewlettPackard Pavilion ze4910us Laptop takes the PC2100/2700 DDR SDRAM SODIMMs Memory Type, and comes installed with 512 MB (removable) of Memory. You can upgrade your HewlettPackard Pavilion ze4910us Laptop to up to a maximum of 1.0 GB Memory, the system has 2 sockets to install Memory, already with 512 MB (removable) standard Memory installed. For best Laptop performance use the maximum amount of allowed Memory per slot for your Laptop.
Choose the following Memory Upgrade for HewlettPackard Pavilion ze4910us Laptop.

Hope that helps.

Dec 15, 2010 | Computers & Internet

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I want to upgrade my memory on my Pavilion 513n,


FixYa is a product support website, and as such we do not delve into manufacturing. No we cannot supply ram memory.

I can supply you with the solution to your questions, however.

This is HP Support, and the main page for the Pavilion 513n Desktop PC,

http://h10025.www1.hp.com/ewfrf/wc/product?product=90384&lc=en&cc=us&dlc=en&submit.y=5&submit.x=6&lang=en&cc=us

If you click on > Product information > Product specifications > HP Pavilion 513n Desktop PC Product Specifications,
you can view,

A) What type of ram memory the computer uses,
B) How much is the Maximum Total Amount for the computer,
C) How much is the Maximum Amount for EACH ram slot,
D) How many ram slots

Look under the Memory heading.
A) What type of ram memory
Type - DDR
It's DDR Sdram

Speed - PC1600/PC2100
Tells you either PC1600 can be used, or PC2100.

PC1600 is DDR Sdram that operates at 200MHz.
PC2100 is DDR Sdram that operates at 266MHz.

{To expound:
Ram memory operates at a Frequency Rate. Slang for frequency rate is 'Speed'.
Mega = approximately 1 Million
Hertz stands for Cycles per Second
Example: PC2100 is DDR Sdram that operates at 266 Million Cycles per Second }

B) What is the Maximum Total Amount for the computer. (Motherboard)
According to HP it is 1GB.

{Maximum - 1GB (2 X 512) HP recommended maximum}

I believe this to be wrong. The Total Maximum Amount is 2GB.
1GB per ram slot.

I base this upon using the memory configurator's of several websites, that sell ram memory for the Pavilion 513n desktop computer, and looking at what the motherboard chipset for the Pavilion 513n will support.

The motherboard chipset is the Intel 845GL.
This chart found on Wikipedia, states what the Intel 845GL chipset will support,

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Pentium_4_Chipsets

As you can see reading across from the 845GL subheading, and looking under > Max.memory, 2GB is listed.

Sources for online memory configurators,
1) Crucial.com
2) Tigerdirect.com
3) Newegg.com
4) Memory4less.net

In this case,
C) Maximum Amount for EACH ram slot is 1GB.

D) There are Two ram slots. {Proper speak for ram Slot is ram Bank}

Kingston is a good brand for economical ram memory.
So is Ultra.

An easy way to find out what type of ram memory you need, and how much is the Maximum Total Amount, as well as the Maximum Amount for Each ram slot, is to use an automatic scanner from a website that sells ram memory.

The above four websites listed, are but a small handful of the total websites online that offer an automatic scan.
Let's use Crucial.com for an example.

On the main page,

http://www.crucial.com/

,you will see - Scan My System, in blue.
Simply click on it to run an automatic scan of your computers hardware.
Doesn't look at your personal effects, just the hardware of your computer.

After the scan is done, you will be presented with the ram memory info you need.
Several options of ram memory are presented for you to choose from.


Apr 26, 2010 | HP Pavilion 513n (P9850A#ABA) PC Desktop

1 Answer

I have 4 banks of ram slots. Can I keep the Bank1 256k Bank2 256k. Can I put 1G into bank3.


It is strongly recommended that you install RAM in matched pairs. So if you add a 1GB module in bank 3 then you should add 1GB in bank 4
But you can add just the one module and it should work, but not at optimal speed.
http://www.crucial.com/store/listparts.aspx?model=Pavilion%20a1410n

Jan 12, 2010 | HP Pavilion a1410n (ER890AA) PC Desktop

2 Answers

Can i change the ram of my laptop from 1 ghz ( 2 x 512) to 4 ghz (2 x 2ghz) thanks


To check the specifications of the machine I would suggest either calling HP or logging into your account through HP.com or doing a crucial.com scan. Crucial has not been wrong in the 5 years that I have been using them. It will scan your machine and tell you what you have and what the max is and what speed and size you have and can purchase. Their are cheap and quick to ship. You will not be disappointed.

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Install Ram upgrade for HP Laptop Pavilion


Maximum memory capacity is Up to 1 GB (1024 MB) SDRAM using 512-MB modules.

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Frustratingly slow


You should bumb your memory from 256 to at least 512, and better yet if at 1024.

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there should be a setting in the bios to adjust the shared memory with video.

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Hp system board


the machine uses ddr 1 memory and hold a max of 2 gb of ram


RAM 128/2700 MB DDR SDRAM
Maximum 2 GB (2x1024MB DDR SDRAM)
Sockets Two 184-pin DDR DIMMs
Size 128, 256, 512 and 1024 MB DDR DIMMs

the motherboard is a socket 478 board , the Dual-Core chips are socket 775 so you couldnt use them unless you change the motherboard

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