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Load Up Failure, Power on, then goes off.

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DreamerSpawn

Senior member
My system specs are listed below. I'm just curious what would you guys think would be the FIRST thing I should look at in this situation:

I turn my computer on, the power comes on, then it automatically shuts off after a second or two. Now, I have a power console surge protector, so I can turn on and off what accessories I want at the time. When the computer powers off, I can't just hit the power button again. I have to turn the MASTER on my power console totally off then back on in order for it to let me have another go...otherwise, there is no power when I hit the button a second time.

Now, if I go thru this process a few times, I can get my machine to boot up and run just fine. I am wondering if it's the power supply that can cause behavior like that? It's not the hard drive, just got a new Maxtor 300 Gig....so I have to take the 160 gig off of my tag, but other than that, things are accurate for my system.
 
I'm betting PSU. Especially since you just added the load of another HDD. Unplug one of the hard drives and see if the system stabilizes. What kind of PSU are you using? How many watts and what's the 12v rail amperage?
 
Well, actually, it started when I had the 160 gig in, but I had already ordered the 300 gig, so the 300 is now in as my primary....so it had this problem before....just for the past 2 weeks or less.

My power supply is an Aero Cool 450 Watt with 26 amps on the 12v rail. It's been doing so good for the at least 8 months...maybe 9....but I am thinking maybe the same....but would still like opinions.
 
Yep, the PSU has plenty of amperage for your build. That's not to say that it's not the problem. This one's a toughie cause it could be the MOBO as well. The PSU could be getting shorted out by the motherboard, which would cause a sudden huge power draw, subsequently tripping the breaker on your power center. Is there any way you can measure current draw at the 120v line during startup?
 
Originally posted by: Kelnoen
My first guess would be the Mobo shorting somewhere, had the same problem once.
Click to expand...

Or maybe the motherboard just giving up the go, ey? They don't last forever...that's for sure. Had this one quite a while.
 
Originally posted by: Modular
Yep, the PSU has plenty of amperage for your build. That's not to say that it's not the problem. This one's a toughie cause it could be the MOBO as well. The PSU could be getting shorted out by the motherboard, which would cause a sudden huge power draw, subsequently tripping the breaker on your power center. Is there any way you can measure current draw at the 120v line during startup?
Click to expand...

I have a Curtis power console, and it shows status for Wiring & Surge...both maintain green, so that's okay. It just may be the end of this motherboard. That'll be a shame....but I do have another, better board. I've just been waiting, since I wanted a new tower to put it in. Don't know how to measure current draw at the 120v line during startup....but everything else powers up fine. It's probably the mb then?
 
I forgot to mention something. Once I get my pc to boot up, it has NO problems....and I can shut it down and power it back up through out the day with no problems.
 
Had a similar problem with the wife's machine a couple of months ago. Turned out the video card wasn't fully seated. Also check the GPU fan, it's possible that it's getting sticky and doesn't spin up right away (tho' something tells me this isn't the issue)
 
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