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Square 4-pin plug prevents computer from starting up


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5 replies to this topic

#1 Guest_Tech1292_*

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Posted 05 April 2013 - 10:04 PM

The computer I have:
http://support.hp.com/us-en/products/desktops/pavilion-desktops/

So here is the problem, whenever I plug in the square 4-pin plug, and press the power button, the computer will not start. Once I unplug it, the green light on my PSU will eventually turn back on and the power supply will power on. It will not power on with the square 4-pin plug in. Can anybody help me out here? I'd really like to get this computer up and going again.
 
- I have already looked at the mobo for blown or deformed capacitors, and there are none.
- I did the paper clip 'trick' with the power supply, and the power supply does work.

Edited by Grinler, 05 November 2015 - 01:51 PM.


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#2 the_patriot11

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Posted 05 April 2013 - 10:35 PM

which four pin are you plugging in, to what spot? some computers have a 20+4 pin motherboard supply + the 4 pin CPU power. Are you sure you dont have the +4 pin switched with the CPU power?

 

Also, when did the problem first start happening? did you upgrade the power supply, or something else?


picard5.jpg

 

Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

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#3 Guest_Tech1292_*

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Posted 05 April 2013 - 10:41 PM

I believe they are called molex connectors. It's a white cable located by my CPU fan. My power supply is a 24 pin.

 

This problem occurred a few months ago. I really didn't have time to mess with it at the time.



#4 the_patriot11

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Posted 05 April 2013 - 11:32 PM

This is a 4 pin molex connecter.

 

molex_zpse3de204f.jpeg

 

which goes back to, what does it power? these dont typically run the anything on the motherboard, they are used for fans, and peripherials like CD drives and optical drives.

 

This is a 20+4 pin motherboard power

 

204_zpsc56ec4db.jpeg

 

This is a CPU power connector

 

CPUpower_zps1ea49844.jpg

 

This is a fan connector on the motherboard, can go to either a system fan or your CPU heatsink

 

fanconnector_zps31c1a1ec.jpg

 

Which of these images is the plugin your having problems with?


picard5.jpg

 

Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

If I don't reply within 24 hours of your reply, feel free to send me a pm.


#5 Guest_Tech1292_*

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Posted 05 April 2013 - 11:38 PM

The CPU Power Connector. 



#6 the_patriot11

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Posted 06 April 2013 - 12:04 AM

then the problem is either in the motherboard or the PSU. While it passed the cheap trick, that just proves that it supplies power-you need a voltemer to make sure its supplying power eveywhere it needs to. There may be a problem with either the motherboard or the CPU as well, the best way to find out in my experience is to hot swap parts if you have them available.


Edited by the_patriot11, 06 April 2013 - 12:09 AM.

picard5.jpg

 

Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

If I don't reply within 24 hours of your reply, feel free to send me a pm.





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