Question about Gigabyte Technology gigabyte Ga-78lmt-USB3 Socket Am3/ Amd 760g/ Ddr3/ USB3.0/ A&Gbe/ Microatx Motherboard

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Gigabyte GA-78LMT-USB3 power supply connection

How to connect smps 12v to Gigabyte GA-78LMT-USB3 my smps dont have 8pin it is only 4 pin

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jadiazq
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SOURCE: CPU fan & PSU fan working but No display coming to the screen

There should be some sort of beeps then. No beeps is an indication the CPU or RAM is not seated properly. You need to refer to board manual if there are beeps.
There is also the matter of... Never mind I just noticed the CPU is an 8 core CPU, but the board supports quad core.
Board specs
http://www.gigabyte.com/products/product-page.aspx?pid=3833#sp

CPU Specs
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103960

Double check my findings and go from there. Good Luck

Posted on Dec 11, 2012

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1 Answer

Cant access bios or boot menu on ga-78lmt-usb3. tried changing keyboard but no luck.


Does the board work? Maybe you tried an unsuccessful BIOS upgrade?
How about explaining exactly what happens when you try hitting F2?

Mar 25, 2014 | Gigabyte Technology gigabyte Ga-78lmt-USB3...

1 Answer

Unable to access bios


you need to go in cmos the del key or f1 or f2 or alt key should get you in if not then clear cmos ok

Mar 25, 2014 | Gigabyte Technology gigabyte Ga-78lmt-USB3...

1 Answer

Stop post screen showing on boot


it is in cmos you need to go there hit the delete key on startup ok

Mar 22, 2014 | Gigabyte Technology gigabyte Ga-78lmt-USB3...

1 Answer

CPU fan & PSU fan working but No display coming to the screen


There should be some sort of beeps then. No beeps is an indication the CPU or RAM is not seated properly. You need to refer to board manual if there are beeps.
There is also the matter of... Never mind I just noticed the CPU is an 8 core CPU, but the board supports quad core.
Board specs
http://www.gigabyte.com/products/product-page.aspx?pid=3833#sp

CPU Specs
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103960

Double check my findings and go from there. Good Luck

Dec 11, 2012 | Gigabyte Technology gigabyte Ga-78lmt-USB3...

1 Answer

New GA-990AX-UD3 motherboard will not boot


You really should take that Power Supply, and use it on grandma's computer.

The 8-pin EPS +12 Volt power cable was brought out, to provide more power To the motherboard AND processor.

http://www.playtool.com/pages/psuconnectors/connectors.html#eps8

The 4-pin ATX +12 Volt power cable has TWO yellow wires.
Yellow wires are 12 Volt wires. (And two Black ground wires)

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

The 8-pin EPS +12 Volt power cable has FOUR 12 Volt wires.

In the motherboard manual, does it say, "Yes Tom. Go ahead and use a 4-pin ATX +12 Volt power cable. We don't care. We just use an 8-pin EPS for fun."

[ This is an 8-pin PCI Express power cable. Completely different,

http://www.playtool.com/pages/psuconnectors/connectors.html#pciexpress8 ]

The motherboard probably uses 150 Watts by itself.
No Ram Memory, no CPU, no fans, etc.

The CPU could use up to 125 Watts of power. Just depends on what AMD, socket AM3, processor you are using.

Now to graphics card's power;
The most Wattage a PCI-Express x16 slot can deliver is 75 Watts.

The most power a 6-pin PCI Express power cable can deliver is 75 Watts.
8-pin EPS +12 Volt power cable? 150 Watts.

When buying a Power Supply you should calculate all components needing power,

http://extreme.outervision.com/psucalculatorlite.jsp

,then buy a Power Supply that has AT LEAST 10 percent more power than needed. Easier on the Power Supply.
Also a computer will NOT use more power than it needs.

10,000 Watt power supply, (Exaggeration ), and the computer only needs about 100 Watts for surfing the internet?

Computer ONLY uses 100 Watts.

Due to the price, the above, and the availability, you should use a 500 Watt power supply at least.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=899123&CatId=1079

http://www.amazon.com/StarTech-6in-Pin-Power-Adapter/dp/B002O21XHQ

Or use it on yours if it has enough Wattage.

Back in the day, the motherboard didn't need to supply that much power to components on it.
More powerful Processors, Ram Memory, and graphics cards, brought the power needed, up.

A 4-pin ATX +12 Volt power cable was added for the motherboard. Then 6-pin PCI Express power cable for graphics cards. Then the 8-pin PCI Express power cable for graphics cards. Lastly the 8-pin EPS +12 Volt power cable.

(Better make sure the Power Supply you have is good, if you wish to use the above power adapter cable. Nothing like having a Power Supply with a weak voltage power rail, and a new build, to pull your hair out on )

http://www.gigabyte.com/products/product-page.aspx?pid=3894#ov


Out of the motherboard manual Page 23,

"With the use of the power connector, the power supply can supply enough stable power to all the components on the motherboard. Before connecting the power connector, first make sure the power supply is turned off and all devices are properly installed. The power connector possesses a foolproof design.

Connect the power supply cable to the power connector in the correct orientation. The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected, the computer will not start.

To meet expansion requirements, it is recommended that a power supply that can withstand high power consumption be used (500W or greater). If a power supply is used that does not provide the required power, the result can lead to an unstable or unbootable system."

For additional questions please post in a Comment.

Regards,
joecoolvette

Oct 25, 2012 | Gigabyte Technology GA-990FXA-UD3-...

1 Answer

What is supported graphic card for 81915ME GIGABYTE MOTHERBOARD


Any with the pci-express interface will fit, but you may find that you need a better power supply. Most pci-e video card need to be powered by the power supply. If there is a power connection on it, it will be a 6 pin or double 6 pin, or even an 8 pin, and your power supply will have support it. Only the lower end cards dont have a power connection

Sep 02, 2011 | Gigabyte GA-8I945P-G Motherboard

1 Answer

Can you connect the 4pin power supply to the 8pin on board 12v


Yes, you can connect the 4 pin power supply to the 8 pin with little trouble but, you should not try any advanced features like overclocking or crossfire. If you would like to do those things I suggest getting a 4 to 8 pin adapter (very cheap usually less than $5) at most local computer stores.

Oct 10, 2010 | Gigabyte GA880GMUD2H AM3 AMD 880G HDMI...

1 Answer

No power to GA-EP43-DS3L motherboard


When connecting your psu and its atx connector to the mainboard, have you connected the +4 connector ? If your psu does not have this extra +4 connector, you may need to buy one.

Also check you have connected the cpu power (12v 4 pin plug)

Nov 12, 2009 | Gigabyte GA-EP43-DS3LR Motherboard

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