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Alternating ON/OFF

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by sorcery77

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I recently built a new computer and when I turned it on, it would stay on for a few seconds then turn off and then go back on again continuously alternating. I triple checked all my wiring and I got a green light from my motherboard so I am unsure what would be causing the malfunction. I even tried disconnecting all non essential components such as my hard drive and motherboard, but it still did the same thing. Can anyone tell me what might be causing this?

Specs:
Intel Core2 Duo E6600 CPU
OCZ GameXStream 700w power supply
EVGA 8800 GTS 320MB Graphics card
ASUS PK5-E Wifi-AP Motherboard
Patriot Extreme Performance Memory 2X1GB

4 replies

by excel_56

Hi, Bought all the components and built system at the weekend. Checked wiring and made sure all was connected ok. Fired up the system and nothing. Unplugged everything and connected each component 1 by 1. In the end I had only the case fan connected, motherboard power and the connector to the front power fascia. The system would power up momentarily, the turn off.

I have seen this before and was caused by the Antec NeoPower supply being incompatible with the Asus Deluxe motherboard. I review the Antec website and there was a message posted explaining the problem. Replacing the power supply with the same wattage unit resolved the problem. In this case I have the Earthwatt 500 which is again an Antec power supply, but alas there is nothing posted on the website.

I will either return the motherboard or case w powersupply and try again.

spec:
Intel Core2 Quad 6600
Earthwatt 500 Antec Power supply
Asus 8600 GT 256 Graphics Card
ASUS PK5-E Wifi-AP Motherboard
1 GB Kingston Memory DIMM

by dedlbug

Im my experiences with similar symptoms, it was always power related. Ensure you are not connected to a UPS or surge protector as a test.

by billclaps

as anyone found a solution to this? I have the same
problem.

Thanks.

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