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Computer wont work when 2x2 connector is plugged in

When i plug the 2x2 connector into my motherboard my computer wont start, it just turn on for like 1sec then turns off. When its not plugged in and just the 2x12 one is, all the fans on the video card, cpu heatsink, and case fans turn on fine and the computers stays on. But i cant do anything because the screen is just blank and nothing happens. I'm pretty sure the psu is not the problem because it ran my other computer just fine. And its 730w so im also pretty sure lack of power isnt the problem either. I dont think that the problem is it getting shorted out/grounded on the case either because it wont work sitting on my table either. Can anyone help me?

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Sounds like a cpu problem, or a failing power supply.

Posted on Dec 29, 2008

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How to add a second hard drive to a tower pc


I'll state basic information, and also more detailed info using an Asus M4A88TD motherboard;

The Asus M4A88TD-V EVO motherboard, with USB 3.0 technology, and an AMD AM3 processor socket,

[Plus the motherboard chipset is an AMD 880G - Northbridge chip, and AMD SB850 - Southbridge chip,

http://en.wikipedia.org/wiki/Comparison_of_AMD_chipsets#A-Link_Express_III ]

Motherboard:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131646

Under the main view photo at the top left; there are 4 views shown underneath. Click on the third view from the Left. Shows a top view of the motherboard.
Now it is the main view. Click on the main view to enlarge it.

See the 5 blue SATA connectors under the Blue and Black ram memory slots? Red line points to them, and subheading states;
SATA connectors; 6Gbps

IF you are going to add a SATA harddrive as a Secondary harddrive, use one that is open. (Nothing plugged into it)

Which one? Does NOT matter.
The beauty of SATA is, that you can plug into any one of those SATA connectors, and BIOS will find the device that is plugged into it.

(SATA 1 connector is usually reserved for the Primary harddrive, though. The one with the Windows operating system on it.
[Windows XP, Windows Vista, Windows 7, etc )

This is a general example of a SATA power cable,

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

Note that it's connector is longer, than a SATA data cable's connector.
It has 15-pins.

General example of a SATA data cable,

http://en.wikipedia.org/wiki/File:SATA_ports.jpg

Looking at the connector for the SATA data cable at the top, note the L-shaped opening.

Looking at the SATA connector for a motherboard, shown on the bottom, note the L-shape where the SATA data cable plugs in.

The SATA power cable has the same L-shaped opening.
Only plugs in one way.

Caution!
IF, the SATA harddrive you are going to use, has a provision for a SATA power cable, AND a 4-pin Peripheral power cable, ONLY use just a SATA power cable!

Why?
Because you will burn the SATA harddrive up! Maybe not right away, but I assure you down the road it will.

4-pin Peripheral power cable,

(Also know erroneously as a Molex power cable.
Molex was the first manufacturer of that type of power cable connector.
Name kind of stuck. Just like calling an adjustable open-end wrench, a Crescent wrench ),

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

A) Computer unplugged from power, computer case open, FOLLOW Anti-Static Precautions.

Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit), the delicate hardware components inside a computer.

Relieve your body of Static BEFORE reaching inside your computer.

Computer on a table, computer Unplugged from power, computer case open;
TOUCH an unpainted surface, of the metal frame of the open computer case.

IF, you leave your computer in the middle of working on it, be SURE to Touch the metal frame again upon your return.

B) Plug the SATA data cable into the motherboard. Bring the SATA harddrive closer to the computer case, and plug an unused SATA power cable into it.

Find a slot in the metal harddrive bay, that you can slide it into.
Install the screws in the side, if the harddrive bay is of this type.
Otherwise there will be plastic clips on the side of the slot.

That's it.
Close the computer case, plug the computer back into power.
WAIT 1 minute, turn the computer on.

General example shown in 3 videos,

1) http://www.youtube.com/watch?v=kCgFYNLzn18

2) http://www.youtube.com/watch?v=OmTyu8jAfDg

3) http://www.youtube.com/watch?v=3a9n7G4q30M&feature=fvwrel

That Asus motherboard also has one IDE connector. (IDE/PATA)
[40-pin connector, Blue, and below the round CMOS battery ]

More than likely if there is a device plugged into it, it would be an optical drive. (CD/DVD drive)

I would Not plug an IDE harddrive, and an optical drive (CD/DVD drive), on that same flat ribbon IDE cable.

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


Aug 03, 2012 | ASUS Motherboard M4A88TD-V EVO/USB3 AM3...

1 Answer

My power supply has a 4 pin connector to the mb,, but my gigabyte mb has 8, which 4 do I use?


The motherboard can support a 2x2 (4 pin) or 4x2 (8-pin) connector. The motherboard employs a foolproof design, as the socket on the motherboard is keyed to prevent you from installing the 2x2 in any position other than the correct one. The image below was extracted from page 24 of the manual.....you plug should be in pins 3,4,7,and 8.

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Jan 19, 2012 | Gigabyte GA-MA785GM-US2H Motherboard

1 Answer

I need assistance with the front panel cables for Intel d915gav. My computer wont turn on. I dont know where to connect the connections. & I dont know why my computer wont turn on. Please help, I need...


Follow this link to the spec sheet for the board. Make sure the wires running from the inside of the front cover are plugged into the correct pins.

http://downloadmirror.intel.com/15196/eng/D915GAV_D915GAG_TechProdSpec.pdf

Oct 17, 2010 | Intel D915GAV Motherboard

1 Answer

New computer tower motherboard(Intel D945GCPE), Processor(Intel Celeron 430 LGA775), memory, hard-drive(ATA), & dvd-rom(ATA). Got it all installed in new tower(ATX,I have green light on the motherboard...


First try to clear CMOS

Turn off the system and disconnect power cables

Locate the CMOS battery on the motherboard and take out the battery

Wait for about 15 minutes

Reconnect battery and try to turn it on.

If it remain same, disconnect power cables

Disconnect hard drive and CD/DVD drives

Try to turn on again.

Also check if the front panel connectors (Power SW, Reset, HDD connector) are properly connected.



Mar 09, 2010 | Intel Motherboards

1 Answer

Intel D945GCLF - No post, No video Signal


Sounds like your wiring isnt right on the on off power. Make sure your power supply can handle this MotherboardAdapter cables are available that allow the incorrect use of older ATX or SFX power supplies in place of an ATX12V or SFX12V power supply. Intel does not recommend the use of these cables. These cables convert a standard 1x4 peripheral connector to the ATX12V 2x2 connector. An ATX12V or SFX12V with the 2x2 connector is required for all Pentium® 4 processor based Intel® Desktop Boards. Using the 1x4 converter cables can lead to system component or power supply damage and/or boot failures. The ATX12V and SFX12V power supply design guides (http://www.formfactors.org/)* recommend a minimum of 8A at 12Volts to properly power any Pentium 4 processor based Intel® Desktop Board. Standard ATX and SFX power supplies typically provide approximately 5A of current, which is not capable of reliably powering the Pentium 4 processor based Intel® Desktop Board. And I think the motherboards going to look for a formatted hard drive wired to the motherboard It wont boot off that USB stick.

Sep 22, 2009 | Intel D945GCLF Motherboard

1 Answer

Problem with power


Make sure the power cables are plugged into the pins properly on the motherboard.

Once you do this then go ahead and reseat the power supply connectors to the motherboard. Only hook up these two connectors from the power supply for now.

Try turning on the computer and hopefully you will get it to turn on now. If you can't then make sure the switch on the power supply is set to 115v. Once this is done try turning on the computer again.

If you still can't get it to turn on then try a known good working power supply or new power supply. If it still doesn't turn on then you know at this point that the motherboard is bad.

Aug 16, 2009 | MSI MS-6523 Motherboard

1 Answer

Computer stopped working - I see a spark when I plug onto motherboard


the spark you see is a shorted power socket on the MOBO, the spark is shutting down the power supply for protection. You need a new board.

May 19, 2008 | Intel D945GTP Motherboard

1 Answer

Upgrading BTX Motherboard


Hi, I think you are looking at the front USB pin aray connector. The on/off switch and LED light pins are usualy along the edge of the board nearest the front of the case. They will be marked with ID: lettering:- pwrs, hdd led, rs-sw, pwr led. If your case has one block plug you will haave to gently seperate the segments and plug them on one at a time. The power and reset switch will work either way but the LED will only work when plugged the right way around, it wont do any harm if they are plugged backwards they just wont work, so experiment. regards mistyman

Sep 21, 2007 | Intel Motherboard

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