I changed the fsb from 166mhz to 200mhz on my computer

OK
We are in the motherboard category, so I will just list the specifications of the motherboard,

The eMachines T3025 Desktop PC uses the FIC AU31 motherboard.
First International Computers (Inc)
Also known as the FIC K7M-NF18G,

http://www.elhvb.com/mboards/OEM/eMachines/manuals/index.html

In the list on the left side, click on the blue -> FIC AU31
This is a Zip file, and the motherboard user manual.

[ A Zip file is a compressed file. It is used to send large amounts of information, more easily.
The file needs to be decompressed, or 'unzipped' ]

After you click on FIC AU31, a small window will come up -
Opening AU31_manual.zip

Make SURE there is a Green dot in the small circle, to the left of Save File.
IF not; click in the small circle to the left of Save File.

A small download window will come up.
Allow the file to download all the way, then DOUBLE-click right on the file name.
(Yellow folder icon with a zipper on it. AU31_manual(1).zip, to the right)

In the next small window go to the far left, and click on -
Extract all files. (Under Folder Tasks subheading)

At the bottom of the next 3 small windows, click on Next, Next, and Finish.
(That's it. DO NOT make any changes in the second small window.
Just click on Next, Next, and Finish)

In the last small window DOUBLE-click right on the file name.

You are now looking at a PDF file, of the motherboard user manual.

1) Processor Socket:
Socket A.
Also known as Socket 462,

http://en.wikipedia.org/wiki/Socket_462

B) Processor (CPU) Support:
AMD Athlon XP, and AMD Duron processors.

AMD Athlon XP processors that are 1500+ to 2800+, and have either a Front Side Bus of 266MegaHertz, or 333MHz.

(Front Side Bus = FSB)

AMD Duron processors that are from 800MHz up to 1300MHz. (1.3GHz)

http://en.wikipedia.org/wiki/Athlon_XP#Athlon_XP.2FMP

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

C) Motherboard chipset:
Nvidia Crush 18G, plus MCP AGP set,

http://en.wikipedia.org/wiki/NForce2

http://en.wikipedia.org/wiki/Comparison_of_Nvidia_chipsets#nForce2

D) Ram Memory:

Two ram memory slots. (The ram memory slot that is closest to the Processor, {CPU}, is ram memory Slot 1. Also known as DIMM 1)

TOTAL amount of ram memory is 2GB.
EACH ram memory slot amount is 1GB.

Uses either DDR Sdram at 200MegaHertz, or 266MHz, or 333MHz, or 400MHz.
That is PC1600, PC2100, PC2700, and PC3200; respectively.

Bear in mind;
Ram Memory typically operates at HALF of the Processor's FSB.

Ram memory MUST be;
Non-ECC
Unbuffered
Uses 2.5 Volts.

(JEDEC set the voltage standards for DDR Sdram at 2.5 Volts.
This means the default voltage for ram memory, set by the factory for this motherboard, is 2.5 Volts.

I don't see any features in BIOS Setup, for changing the voltage parameters, for Ram Memory.

You CAN set the FSB support for the Processor, however.
There is a jumper to the Left of the Northbridge chip, and bottom/left of the Processor socket.

Set the FSB support for the Processor, at either 100/133Mhz.
or 133/166MHz.
See Page 7 (Adobe Reader page number box at Top)

Bear in mind that AMD processors are 'Double-pumped'.
100MHz = 200MHz
133MHz = 266MHz
166MHz = 333MHz

Also on Page 8 - Install the CPU, there is a statement;

"The mainboard has built-in Switching Voltage Regulator to support CPU Vcore autodetection.

That is, It has the ability to detect and recognize the CPU voltage,
clock, ratio and enables users to set up the CPU frequency from the BIOS Setup Screen.

Users can adjust the frequency through Frequency / Voltage Control of the BIOS Setup Screen."

That should be in the -Advanced Features Setup - menu.
Page 21.
The manual doesn't discuss it on Page 21, or anywhere else through the manual. (To my knowledge)

You'll have to go into Advanced Features Setup menu, and look around.
Or we can go through this menu together, posting back, and forth in Comments.

E) Graphics expansion slot:

AGP technology,

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

http://www.hardwaresecrets.com/article/AGP-Bus-Tutorial/155

Can support AGP cards that are either AGP 4X, or AGP 8X.

Doubt you will find an AGP 4X graphics card, and if you do you don't want to use it, anyway.

Use AGP 8X graphics card. It will be 0.8 Volts.

For additional questions please post in a Comment.
Regards,
joecoolvette

Here is a compatibility chart for all of your ram with that chipset:
http://www.intel.com/support/motherboards/desktop/d865glc/sb/CS-027110.htm

Anything upto an AMD K7 Sempron 3000+ and will also take upto 768 Mb of sdram memory ....cheers from Scott

Pin Configuration = Pinout

The Front plastic panel of the computer is the Front Panel.
The area of pins on the motherboard that the cables (Wires) go to, is the Front Panel header.
Front Panel header pinout.

The motherboard used in an eMachines T2672 desktop computer is an FIC AU31 motherboard.
Made by First International Computers (Inc.) for eMachines.

http://www.e4allupgraders.info/dir1/motherboards/socketa/au31.shtml

Orient the motherboard like it is in the photo, so we are both looking at it in the same direction.
{Processor to the top, Ram memory slots to the right, white PCI slots to the bottom. The way it sits in the computer case}

The Front Panel header, is a small black rectangular block that sits horizontally, at the far right bottom corner.

It has two rows of pins.
4 across the top, and 5 across the bottom.

(The small rectangular block above it, is for connecting a Power On LED light that has 3 wires. More on this in a moment)

The pins are numbered.
The pins are numbered Evenly across the top, and Odd across the bottom.

Starting from the Left side going across to the Right, on the Top row;
Pins 2, 4, 6, and 8.
There is No Pin 10.

Starting from the Left side going across to the Right, on the Bottom row;
Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the HarDDrive activity LED light. (HDD LED)
Pin 1 is for the Positive wire ( + )
(If the LED light is dim when operating, switch the wires around)

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used. (Reset button)

C) Pin 9 is Not Used. (NC. No Connection)

D) Pins 2 and 4 are for the Power On LED light, IF it is a 2 wire LED light.
Pin 2 is for the Positive ( + ) wire.
(If the LED light is dim, switch the wires around)

If the Power On LED light has 3 wires:
Use the Power On header above the Front Panel header.
This rectangular block has 3 pins.

Starting from the Left side going to the Right; Pins 1 , 2, and 3.
Pin 1 is for the Positive wire.
Pins 2 and 3 are Ground wires.

E) Pins 6 and 8 are for the Power On switch. (Power On button plastic assembly has an ATX power on switch inside it)

This is a link to a free motherboard manual, for the FIC AU31 motherboard. It is in Zipped file form.
(A Zipped file is a compressed file. It is used for one, to send a large file over the internet)

If you do not know how to unzip a file, post in a Comment, and I'll lead you step by step.

http://www.elhvb.com/mboards/OEM/eMachines/manuals/index.html

In the list on the left side, left-click right on the file name - AU31

For additional questions please post in a Comment.

Regards,
joecoolvette

[ P.S.
The motherboard chipset is an Nvidia Crush 18G + MCP AGP
It is an Nvidia Force 2 chipset,

http://en.wikipedia.org/wiki/Comparison_of_Nvidia_chipsets#nForce2

Supports Processors that are AMD, and fit in a Socket A processor socket.
(Socket A is also known as Socket 462)

Supports AMD processors that have either a 200MegaHertz Front Side Bus, or a 266MHz FSB, or a 333MHz FSB.

AMD Athlon XP processors with either a 266MHz FSB, or 333MHz FSB.
From the 1500+ model up to the 2800+ model.

AMD Duron processors with a 200MHz FSB.
From the 800MHz to the 1.3GHz models

(AMD Athlon XP is the top of the line. Then it's Duron, then Sempron.
A Sempron processor has half of the L2 cache that a comparable Athlon XP does)

Ram Memory is DDR Sdram at either 200MHz, or 266MHz, or 333MHz, or 400MHz.
Depends on the Processor used.

(Ram Memory typically operates at half of the frequency rate ('Speed') that the Processor does.
If the processor's FSB is 333MHz, you can use 400MHz DDR Sdram. {PC3200}

Confusing I know.
DDR Sdram is 'double-pumped'. It is actually 200MHz for PC3200.
This is close to half of 333MHz.

Processor has an FSB of 266MHz? Ram memory used will be 266MHz. Remember, it is actually 133MHz for the ram memory. (PC2100)

Need an AMD Athlon processor?
I found this place years ago. Not advertising for them. Just computer geeks sticking together, and sharing information. (I have bought a motherboard from them, and it works fine),

http://www.weirdstuff.com/cgi-bin/category/10201

There are several versions of the K78S5A. The following answer applies only to v.3.x.
CPU: AMD Duron 200Mhz FSB CPU - 950 AMD Duron 266Mhz FSB CPU - 1800
AMD Morgan 200Mhz FSB CPU - 1.3G
AMD Athlon 200Mhz FSB CPU - 1.4G AMD Athlon 266Mhz FSB CPU - 1.4G
AMD Palomino 266Mhz FSB CPU - 1.2G
AMD Athlon XP (0.18u) 266Mhz FSB CPU - 2100+ AMD Athlon XP (0.13u) 266Mhz FSB CPU - 2600+
I hope that helps! Good luck.
GaugeMan

Actually your RAM has a 200mhz frequency, 400mhz is the data rate , this is why it's called a Double Data Rate.
The maximum ram memory speed officially supported by that board is 133mhz - it can't be overclocked to more than 166mhz. Your memory will be underclocked .

go to pcchip web site download manual jim

Visit the support section of the eMachine website to get the software that controls that function.

Here is some great PC solution by Some FIXYA EXPERT. Get any kinds of PC solution from bellow.

1. Intel MotherBoard
2. Mercury Motherboard
   
3. Gigabyte Motherboard
4. MSI Motherboard
5. P5GC-MX/1333 Motherboard
6. via

qpoii6

My computer does a similar thing, the issue with mine is the mother board which requires everything to be at a certain temperature. Let it run on the start screen for a couple minutes and hit the reset button. If it doesn't boot up you're going to have to get more involved with your PC. Turn off the power, unplug the cord from your power supply, open the case, look for the battery and the JP8 (CLRTC) jumper. Move the jumper from pins 1-2 over to 2-3, wait 30 seconds, and move the jumper back. Close the case, plug in the power cord, turn on your machine, and boot it up. If it still fails to boot check that all cables are securely attached (inside and out), check that the RAM is securely seated, and check the CMOS battery to be sure it is not dead. Beyond this you're looking at a component failure and should contact a repair tech.

P.S. if you feel up to it and can't wait for service, pull the hard drive out of the first computer and use it in a different computer. Be sure to unplug the hard drive from the second computer.