Auto restart after shutdown

yanta

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Oct 23, 2014
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Hi,

I just built a system for my niece with spare parts I had, but with a new B75M-D3H motherboard and 4GB G.Skill memory.

After shutting down the system it automatically powers on and restarts every time.

If have run SFC /.SCANNOW.
I have checked the BIOS for "Restart after power loss" and it is set to Off.
I have checked the AutoReboot in the registry and it is disabled (0)

(refer this thread): http://www.tomshardware.com/forum/385253-31-computer-turns-back-shut

Power Supply is 550W with a 4 pin motherboard connector. Motherboard has an 8 pin connector so I plugged in a 4 to 8 pin adapter.

Interestingly, the front Audio and USB also does not work. Disconnected that though and PC still automatically powers back on, so I don't think those two are related.

System: I5-2500K on Gigabyte B75M-D3H with 4gb DDR3-1600 (2 x 2gb). 2x 500GB Seagate spinners, 1 x Blu-ray writer and 1 x DVD writer, Gigabyte GTX-650 video. Windows 7 Pro x64.

Any ideas are greatly appreciated.

thanks
Tanya

 

yanta

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Oct 23, 2014
23
0
4,520


fan headers? Interesting suggestion. I will give it a try.

WOL is disabled.
 

yanta

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Oct 23, 2014
23
0
4,520
ok, No go with the fan headers. I took all off except the cpu cooler.

I also removed all USB and audio connectors. Unplugged optical drives and disconnected the LAN.

Still restarts after it is powered off.
 

Tanyac

Reputable


Hi, yes. It was caused by a faulty USB header on the front case connectors. It was repaired under warranty, but not repaired properly, so whenever the USB2.0 header was plugged in, it shorted the motherboard, causing it to automatically restart.

I strongly "encouraged" the retailer/manufacturer to give me a new one, and eventually they did. This one only has USB 3.0 ports so everything is now good.