eMachines T6420 PC Desktop Logo
John K. Wadsworth
John K. Wadsworth Posted on Jul 21, 2012
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Only have 2 memory slots on my T6420 suppose to have 4

Only can see 2 memory slots on my T6420. Book says it has 4 slots. Unless the motherboard is different I'm not sure..

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joecoolvette

joecoolvette

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  • eMachines Master 5,660 Answers
  • Posted on Jul 21, 2012
joecoolvette
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According to my sources the eMachines T6420, is supposed to use an MSI MS-7207
Also known as K8NGM2-L,

http://www.newegg.com/product/product.aspx?Item=N82E16813130041

As you can see 4 ram memory slots.
You don't know what you're talking about...............

OH I'M JUST KIDDING!

[Whoa! Settle down there big John. No need for violence! Lol!
'sides I would just sit here and whine! ]

There have been several times, eMachines 'fought to keep their head above water'. During some of those times, they bought from one motherboard manufacturer, after another;
Asus, ECS, FIC, Intel, MSI, and TriGem.

Then Gateway bought them out, and Acer bought out Gateway.
Point?

You may have a 'last moment' motherboard.
Point 2, is the original motherboard may have gone bad, and been replaced.

What to do?
I suggest using the free CPU-Z from CPUID.com
This tiny program will tell you info about;

A) Processor (CPU tab and Cache tab)
B) Motherboard (Mainboard tab)
C) Ram Memory (Memory tab and SPD tab)
D) Graphics (Graphics tab)

http://www.cpuid.com/softwares/cpu-z.html

The Mainboard information will tell you the;
1) Manufacturer of the motherboard
2) Model number of the motherboard
3) Motherboard chipset
4) BIOS; Manufacturer, version, and date

Armed with this information, you, or I, can find out all of the specifications of the motherboard. May be also able to find a motherboard manual.

On the right side of the CPU-Z page, go to the
- Download latest release - subheading, and click on the purple -
1.61 setup, english

On the next page click on - Download Now! - in the purple rectangle.
A small window will come up on the right -
Opening cpu-z_1.61-setup-en.exe
Click on Save File.

A small window will come up on the left. In the wording at the top, tells you where the file will download to.

Windows XP;
(For Vista and Win7 it is slightly different. Post if you need these instructions),

It may have Desktop, or My Documents, or Downloads, in the wording.
Desktop: The file will be on your desktop screen.
My Documents: Click on Start, then on My Documents.

Downloads: Click on Start, then on My Documents.
DOUBLE-click on Downloads.

When you see the file name (cpu-z_1.61-setup-en), DOUBLE-click on it.
There may be a Microsoft 'squawk box' come up,
"Do you want to run this file?"
Click on Run.

[ In order to get a digital certificate, you have to pay for the main software program, and EACH time someone downloads it.
It is FREE. I would not want to pay, in order to give away free software, would you? ]

Welcome to the CPUID CPU-Z Setup Wizard, will appear.
Click on Next.
Click on the empty circle to the left of -
I accept the agreement. (Or after you have read it)

Now click on Next.
Click on Next again.
One more time............STOP.

The next window will put ASK as your browser home page, and add the ASK toolbar.
Click on the square with a green checkmark in it, to the left of -

Install the Ask Toolbar and make Ask my default search provider

Removes the green checkmark from BOTH boxes, and DOES NOT install Ask -> anything!

NOW,....click on Next.
One more time, Next,.....
Now click on - Install

If you click on Finish, now, you will get the CPU-Z readme file.
You can choose to read it, then click on it's red X,
Or;
Click on the green checkmark, and remove it.
No CPU-Z readme file will come up.
Choice is yours.

The CPU-Z icon will now be on your desktop screen.
Double-click on it.

When CPU-Z loads, it automatically has the CPU tab open.
CPU = Central Processing Unit. Another term used is Microprocessor, or simply Processor for short.

Click on the Mainboard tab. Post back in a Comment.
Regards,
joecoolvette

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My mobo has 4 memory card slots
1) All of your memory must be compatible with your motherboard (DDR, DDR2, or DDR3 and speed and latency). For best results, if you have dual channel capability, each pair of memory sticks should be matched. (Usually consecutive serial numbers indicate pairs from a given manufacturer.) Both sets of memory should be rated at the same speed (or the slowest speed will be your memory speed). Some motherboards may not work with all 4 slots occupied unless the memory was certified to work as a set of 4.

2) Which motherboard do you have? The motherboard manufacturer and memory companies often will have lists of compatible memory. The motherboard manufacturer will also have information on the dual-channel pairing.

My current and previous motherboards have had memory slots in color pairs (blue, black). For my boards, I put the sticks in the blue slots (A2 and B2) first. (Preferably these should be the largest memory capacity.) Then I put the second pair of memory into the black slots (A1 and B1). DIMM slot A1 is closest to the CPU; B2 is the farthest away from the CPU.

Depending on your CPU cooler, you may need to remove it or modify it to use all 4 DIMM slots.

Observe the appropriate steps to avoid static discharges while handling your memory and when inside your computer. For actually inserting the memory, make sure that the locks (white on my motherboards) are fully open (hinged away from the slot). Line up your memory so that the slot in the memory is on top of the key in the slot and the memory is centered in the slot. It will only line up one way; the wrong memory type will not line up. Push your memory stick down fully until the locking clips rotate up and fully engage the memory. (You may need to push down at multiple places to get it fully seated.) You will then repeat the procedure with the rest of the memory.

Note: if you get a memory error, three beeps (on many boards), you will need to remove the memory and test one stick at a time in the A2 slot (for example). Then test pairs of slots. It is not unknown for either one stick to be bad or one slot to be bad. Look at the total memory your OS identifies, if you manage to boot in spite of any issues. Running Memtest may be needed but even that may not identify which specific memory segment is bad.

I hope this helps.

Cindy Wells
(who has installed or replaced memory since giving an 286 computer a full megabyte of memory. DIMMs are a lot harder to mess up as long as you have the correct memory. Note: most of the different DIMM types have different number of pins; thus sometimes it's very easy to tell that the wrong memory is being used. This isn't always the case.)
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Dec 05, 2012 • Computers & Internet
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What's your problem?bit ix38 quad gt motherboard with 2 gig of ddr2 ram i want to add a 1 gig stick of more ram that ive bought how do i do this? thanks windows seven
Top view of motherboard, scroll down. (Thought you might also like to read the reviews, and Comments)

http://www.bit-tech.net/hardware/motherboards/2007/12/06/abit_ix38_quadgt/2

Motherboard User Manual,

http://www.theraptorpit.com/forum/index.php?/forum/124-abit-motherboard-tech-support-unofficial/

1) On the motherboard the Blue ram memory slot that is closest to the copper heatsink, is ram memory Slot 1.
Also known as DIMM 1.

Ram memory ALWAYS has to be in this ram memory slot.
The Processor reads ram memory Slot 1 first.

2) The Blue ram memory slots are Slot 1 (DIMM 1), and Slot 3.
(DIMM 3)
The Black ram memory slots are Slot 2 (DIMM 2), and Slot 4.
(DIMM 4)

To run Dual Channel ram memory, means there are two LIKE ram memory modules ('Stick'), and they are installed in the SAME channel.

This would mean to alike ram memory modules, in both Blue ram memory slots, or both Black ram memory slots.

Since the ram memory modules need to be alike, they are generally purchased from the same manufacturer, and are the same kind.

Running ram memory in a dual channel configuration, is supposed to increase ram memory 'speed', up to 30 percent.

This is Baloney!
May look good on paper, but in actual use in the field it's cr@p.
Actual performance increase is more like 1 to 2 percent.
This has been proven by Tom's Hardware, and many, many motherboards, ram memory, Processors, etc.

So you have 2GB of DDR2 Sdram, huh?
Is it just one 'stick' of ram memory, or are you referring to two 1GB sticks?

If the above holds true install them in Slot 1 and Slot 3.

If not, and it is a 2GB stick of ram memory, be sure it is installed in Slot 1 (DIMM 1)
Install the 1GB stick in Slot 2.

It isn't the same as the 2GB stick.
It is 1GB.
Does NOT go in a dual channel configuration.

(Catching all this? There is NO dual channel ram memory!

It is ram memory that is -> ALIKE, and used in a -> dual channel configuration.
Used in two separate ram memory slots, that support the dual channel configuration.

Sold with the advertising scheme of 'Dual Channel', but really just means the two ram memory modules, (Or four), are -> alike.

1) Same Voltage used
2) Same Ram Timings
3) Same Chip Configuration
4) Same size in amount
5) Same frequency rate ('Speed')

With ram memory in a dual channel configuration, the ram memory modules team up on the task.)

For additional questions please post in a Comment.

Regards,
joecoolvette
Read full answer
Oct 31, 2012 • Computers & Internet
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I just purchased and attempted to install G.SKILL DDR3-1600 PC3-12800 4GBx4 CL9-9-9-25 1.5v into the 4 slots on the motherboard and the reboot would not proceed past the "LOADING ASUS EXPRESS...
Memory
-4 x DIMM, Max. 16 GB, DDR3 1800(O.C.)/1600(O.C.)/1333/1066 ECC,Non-ECC,Un-buffered Memory
Memory- Dual Channel memory architecture

*Due to OS limitation, when installing total memory of 4GB capacity or more, Windows® 32-bit operation system may only recognize less than 3GB. Install a 64-bit WindowsWindows® OS when you want to install 4GB or more memory on the motherboard.
Memory- *Refer to www.asus.com or user manual for Memory QVL (Qualify Vendor List)
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The monitor will not get a connection. I need to know where the video card is located.
This is eMachines Support, T6420 desktop computer>Specifications, and downloads page for the User Guides,

http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T6420

The eMachines T6420 does not come with a graphics card from the factory.
It comes with Integrated Graphics.

Integrated Graphics is also known as OnBoard Graphics.
On the motherBoard

The GPU is soldered to the motherboard.
(Graphics Processing Unit,

http://en.wikipedia.org/wiki/GPU

OR,
someone has installed a graphics card, into the PCI Express x16 slot on the motherboard.

You can determine real easily if your computer is using Integrated Graphics, or a graphics card.

If it is using Integrated Graphics, the monitor will be plugged into the I/O area, on the back of the computer, and into a VGA port,

http://en.wikipedia.org/wiki/VGA_connector

(I/O area;

I/O = Input/Output

The I/O area, is the area that has the rectangular metal shield, and Input/Output devices are plugged into this area.

Devices such as a Keyboard, Mouse, Printer, and so on )

HOWEVER, with the motherboard used in an eMachines T6420, the I/O area could also have a white DVI port.

http://en.wikipedia.org/wiki/Digital_Visual_Interface

This was an option offered. The DVI port still connects to the Integrated Graphics on the motherboard.

The eMachines T6420 uses an MSI MS-7207 motherboard.
(Micro Star International, Inc.)

http://www.tigerdirect.com/applications/searchtools/item-detailsInactive.asp?EdpNo=2665522

The above link is to,
1) Show the motherboard
2) Provides a link to the Motherboard Manual

Looking at the photo of the motherboard, you will see two long White slots.
Above these two slots you will see a longer White slot.

The bottom two white slots are PCI expansion slots.
The top longer slot is a PCI Express x16, expansion slot.

This is where a PCI Express graphics card would go.

I would like you to scroll to the bottom of the page, to the Product Resources heading.

Under it is a link to the Motherboard Manual, for the MSI MS-7207 motherboard.
Also known as K8NGM2-L

Left-click on the blue - MSI K8NGM2 Series Manual.

You will be looking at a blank white page, as the PDF file downloads in the background.
Took 34 seconds with a medium speed DSL connection, for me to download it.

NOW,
No Signal on the monitor, means the monitor is Not receiving a video signal.

1) Check the monitor cable if it is removable. Use it on another working computer to insure it is good.

2) If the monitor cable proves to be good, the next area to check would be the graphics.

If the computer is using Integrated Graphics, and no one has installed a graphics card, the test would be to install a graphics card, and plug the monitor into it.

Computer off, unplugged from power, Anti-Static precautions are observed before reaching inside the computer, and handling the graphics card.

I don't think the problem is the graphics. Could be wrong, but we'll see.
Let's carry the diagnosis past the graphics for now.

I think the problem could be due to a bad Power Supply.
Weak Voltage power rail.

Enough power to light lights, and spin fans (Perhaps), but not enough to turn the Processor on.
(Fans may be spinning, or may just spin a few times, and stop)

1) ALL the lights use Less than 1 Watt of power
2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use 51 to 125 Watts of power.

Continued in an additional Comment.
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Go to http://www.cricial.com and run their memory scanner. It will tell you for sure.
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Make sure you have the memory installed correctly. Those beep codes identify it as bad memory. Try the old RAM.
Good luck with this.
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Gateway GX7018E / T6420 = swap video cards for a test?????
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Motherboard for a e-machine t6420
CPU: AMD Athlon™ 64 3400+ Processor (with AMD 64 technology)
(2.20GHz, 1600MHz system bus, 512KB L2 cache) Operating System: Genuine Microsoft® Windows® XP Media Center Edition 2005
Chipset: NVIDIA® nForce™® 410 Memory: 1GB DDR (2 × 512MB), 400MHz dual channel
Expandable to 4GB Hard Drive: 200GB HDD (7200rpm, 2MB cache) Optical Drive: 16x DVD±RW multiformat double layer drive Media Reader: 8-in-1 digital media manager (Secure Digital™ (SD), smart media, micro drive, memory stick, memory stick PRO, compact flash, multimedia card, USB 2.0) Video: NVIDIA® GeForce® 6100 GPU
up to 128MB of shared video memory
PCI-Express® (PCI-E x16) slot available Sound: 6-channel (5.1) high definition audio Network: 10/100Mbps integrated Ethernet LAN (RJ-45 port) Modem: 56K ITU V.92-ready fax/modem (RJ-11 port) Peripherals: Premium multimedia keyboard, 2-button wheel mouse, amplified stereo speakers Ports/Other: 5 USB 2.0 ports (4 in back, 1 in media reader), 1 VGA external connector, 1 serial port, 1 parallel port, 2 PS/2 ports (keyboard and mouse), 5 audio ports (2 in front, 3 in back) Dimensions: 14.25"H x 7.25"W x 16"D Weight: 22.5lbs
LInk to spec page : http://www.e4me.com/support/product_support.html?cat=Desktops&subcat=T%20Series&model=T6420
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