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It may be due to chip density, especially if you have an older DDR3 based system. Your system may require 2Gbit (Gigabit) density DRAM chips and the memory you installed is using 4Gbit density chips which is not compatible. Not to be confused with the term Gigabyte (capacity of the memory). 2Gbit chips are no longer being produced by the DRAM chip manufacturers therefore we're unable to manufacturer compatible modules.
In Windows, click on the start button and open "Control Panel".Use classic view for Vista and 7. Then open "System". This will display basic information about the computer including the amount of RAM installed.
In MacOS, select "About This Mac" or "About This Computer" from the Apple menu in the upper left corner of your Desktop. This will provide information about your Mac's total memory (built-in memory plus DIMMs or SIMMs installed).
In Linux, open a terminal window and enter the following command: cat /proc/meminfo
This will show the total amount of RAM as well as other memory information.
First, make sure you have the correct memory for your Notebook. Please refer to Kingston’s on-line Memory Search at www.kingston.com for assistance. After you confirm that you have the correct memory for your system, do the following:
Note: Kingston is in no way responsible for any problems resulting from flashing the BIOS. Flashing the BIOS is merely a troubleshooting suggestion. Customers who flash the BIOS do so at their own risk. All instructions on how to upgrade the BIOS will be provided by the computer manufacturer or the 3rd party BIOS manufacturer and not by Kingston.
Additional memory will not necessarily increase the performance of your computer. It will allow you to run more programs or processes at once or more memory intensive programs. There may be a performance increase if the original amount of memory installed was close to insufficient for the programs and processes you use the computer for.
For desktop computers, shut down and unplug your computer and open the case. Please note: The higher capacity memory should be installed in slot 1 followed by the next lower capacity memory in slot 2 and so on. Please refer to your motherboard manual for proper slot identification.
Remove the memory module as shown in Fig 1. Push the tabs (1) outward and the module will gently pop out of it's slot (2). Remove it completely from the slot.
To Install the new memory module see in Fig 2.
Push the tabs (1)that are at the ends of the memory socket outward and align the memory notches with the key of the memory socket (2), then push the memory down FIRMLY into the socket so the latches lock the memory in place (3).
If the memory has been properly installed and still not detected and you do have the correct memory you should make sure you have the most up to date BIOS from your computer manufacturer's website.
For notebook computers, please note that before you remove/install memory in notebooks you need to shut down the unit and remove the battery pack and power cord. Push the memory in FIRMLY so that it makes good contact (it is important to push the memory in FIRMLY) into the socket before pushing it down to lock in place (See figures below) . Once the memory is installed please put the battery back in your unit and give it power using the power cord and not solely from the battery. If the memory has been properly installed and still not detected and you do have the correct memory you should make sure you have the most up to date BIOS from your computer manufacturer's website.
BIOS - Basic Input/Output System is installed on the computer's motherboard. It controls the most basic operations and is responsible for starting your computer up and initializing the hardware. It is data that is usually held in a ROM chip, which can be updated by "flashing" the BIOS as it's called. BIOS upgrades may correct errors, support new CPUs, support new hardware, including memory etc. BIOS updates are usually obtained by the computer's manufacturer's website.
*NOTE: Kingston in no way is responsible for any problems resulting from flashing the bios. Flashing of the bios is merely a trouble shooting suggestion. Customers that flash their bios do so at there own risk. All instructions on how to upgrade the bios will be provided by the computer manufacturer or the 3rd party bios manufacturer and not by Kingston.
Parts sold in kits (denoted by "K2" or "K3"in the part number, e.g. – KVR400X64C3AK2/2G) are specifically packaged for use in Dual or Triple Channel motherboards. Although Dual and Triple Channel technology resides on the motherboard itself (inside the chipset), the memory modules need to be installed in pairs or sets of three for Dual or Triple Channel mode to function properly. Identical modules packaged in a kit work best because the motherboard will be accessing all the memory modules as a single memory location with a wider bandwidth. Kingston suggests the use ofmodules sold in kits for Dual or Triple Channel enabled motherboards.
Yes. In most cases if the computer supports a slower speed, it will clock down to a slower speed as long as it is the correct memory type (DDR, DDR2, etc). But be aware the function of clocking down depends on the computer and it isn't guaranteed to work in every case
In many cases, the BIOS or a diagnostic program will report the memory bus frequency, which is half of the frequency for DDR type memory. As its name implies, DDR (Double Data Rate) data rate is twice the memory bus frequency. So if the memory bus speed is 800MHz and you are using DDR3-1600 memory, the RAM is running at the correct speed.
ElectroStatic Discharge, ESD is simply the discharge of built up static electricity.ESD should not be taken lightly as this is one of the few things an individual can do to damage or destroy their computer or hardware components.It is like when you rub your feet on the carpet and you touch something metal.ESD can occur without the user feeling a shock and will occur when only working on the inside of the computer or handling hardware.
How to help prevent ESD
The best method of preventing ESD is to use an ESD wrist strap or a grounding mat or table.However, because most users do not have access to these items, we have included the below steps to help reduce the chance of ESD as much as possible.
To learn more about ESD and how to protect your electronics, please refer to the below site.
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