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My new build flashes on, then turns right back off.

Last response: in Components
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June 25, 2011 2:00:25 AM

This is driving me nuts, because I've been having quite a few problems with this build... The flash works like I'll hit the power switch(which, unfortunately, doesn't have a power LED), and the LEDs in the fans and the power source will blink, along with the fans running, but it'll only do this for half a second, then turn right back off. To get it to do that again, I have to flip the power switch on the power supply off, then flip it back on.

Here are sone specs...
ASUS M4A89TD PRO/USB motherboard
Corsair XMS3 CMX12GX3M3A1333C9 memory (3x 4GB)
AMD Phenom II Black Edition processor
Corsair GS700 Power supply
XFX Radeon HD 5570 video card

Any help would be appreciated. Thanks.
June 25, 2011 5:13:08 AM

Are you trying to say that you're PC doesn't boot up as soon as you turn on the PC it will power down?
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June 25, 2011 5:31:49 AM

I think you may need the 8-pin/4-pin for the CPU... Just check every cables if it's plugged in including the CPU Pins... By now you should realize that but if you did checked every cables, than it must be the PSU itself as some or few people got problem of it's not starting or dead on arrival... I woulda have gotten the Corsair Tx 750W V2 which is at same price and is better... If the PC start than turn off than start and turn off by itself than it's the 8 and 4 pin plug on the cpu(Next or near to it)...
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June 25, 2011 3:37:08 PM

venjhammet said:
Are you trying to say that you're PC doesn't boot up as soon as you turn on the PC it will power down?

Yeah, basically.
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June 25, 2011 3:38:34 PM

legendkiller said:
I think you may need the 8-pin/4-pin for the CPU... Just check every cables if it's plugged in including the CPU Pins... By now you should realize that but if you did checked every cables, than it must be the PSU itself as some or few people got problem of it's not starting or dead on arrival... I woulda have gotten the Corsair Tx 750W V2 which is at same price and is better... If the PC start than turn off than start and turn off by itself than it's the 8 and 4 pin plug on the cpu(Next or near to it)...

I have both cords plugged in. Same problem.
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Best solution

June 25, 2011 3:49:37 PM

legendkiller said:
I think you may need the 8-pin/4-pin for the CPU... Just check every cables if it's plugged in including the CPU Pins... By now you should realize that but if you did checked every cables, than it must be the PSU itself as some or few people got problem of it's not starting or dead on arrival... I woulda have gotten the Corsair Tx 750W V2 which is at same price and is better... If the PC start than turn off than start and turn off by itself than it's the 8 and 4 pin plug on the cpu(Next or near to it)...



He doesn't need a PSU with higher rated power output; that build could run on a 650TX, probably even on less than that (although it's a pain to find good PSUs at that stage).

Okay, so you've checked your wiring, do you have any other PSUs which you could use? It sounds like either a bad PSU or a bad mobo (or an incorrect setup - do make sure you double check everything), the easiest thing to do would be to try and plug in a different PSU and see if you can boot into bios.

Alternately you could take out a multimeter and start checking voltages: check your manual for detailed information on voltages then switch your PSU on and measure the relevant voltages across your mobo.
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June 25, 2011 4:04:35 PM

I think i may know the problem but im not sure, What kind of MoBo is it? It could be a RAM slow problem... OR something liek the Asus SaberTooth X58 which i have to put the RAM on the light browns ones instead of the dark brown ones:
http://www.youtube.com/watch?v=odT5hrljdDM
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June 25, 2011 11:47:47 PM

Found out the problem. Power supply was bad. Thanks for the help, though, guys. :) 
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June 25, 2011 11:48:33 PM

Best answer selected by Shadowd5.
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