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Bad Power Supply??

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Name: Lajon4Sevendust
Date: August 5, 2004 at 10:28:26 Pacific
OS: Win XP Pro
CPU/Ram: AMD XP 2700
Comment:

Hello,

I'm having problems with my computer staying on when the power goes out. I thought the battery in my old UPS went bad because whenever the power would go out, so would the computer and it already ruined one hard drive. So I bought a new one and the computer still shuts off when the power goes out. I thought I might have gotten a bad UPS so I hooked my laptop up to it (I dont know why I didn't do this to the old UPS) and I ran the power out test and it worked fine. So this brings me to think it might be the power supply. Anyone know of this problem and is it really the power supply? I've never had a problem like this and I don't have another ATX power supply to try out. Any help is much appreciated!!

Thanks,
Brandyn



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Response Number 1
Name: ham30
Date: August 5, 2004 at 10:48:27 Pacific
Reply:

Enter the bios setup. In the power settings look for an option that says something like `State after power failure'. Set it to `former state'.


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Response Number 2
Name: Lajon4Sevendust
Date: August 5, 2004 at 16:32:04 Pacific
Reply:

Hello,

The only setting I could find similar to what you are speaking of was "AC BACK Function." I changed the setting from Soft-Off to Memory and it still shutoff during the test, there is another setting called Full-On, I dont know if will make any difference. My motherboard is a Gigabyte GA-7VT600(-L)...any other ideas would be greatly appreciated!!!

Thanks,
Brandyn


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Response Number 3
Name: dmorlow
Date: August 7, 2004 at 07:23:51 Pacific
Reply:

You know it could be your power supply in the computer is too sensitive for a UPS. There are two different kinds of backup power supplies, UPS and SPS. Everything on the market these days are called UPSes but they are really SPSes. UPS stands for universal power supply where as SPS stands for switching power supply. Switching power supplies work where they work off utility power while the power is on and when the power fails, they switch over to the battery. But there is a split 100th of a second that your computer does not have power. Most power supplies won't reset the computer or turn it off in that small amount of time. But if your power supply is sensitive enough, then it will reset with that small time without power. One thing you could do is get a true UPS but I don't have a clue on where you can get one. I've never seen one sold. I've seen old ones but if you buy an old one, the battery is probably dead anyway.
The reason your laptop didn't reset when you did it is that, even if the power supply in that is too sensitive, as soon as you plug it in, you are charging it a little. It gave it enough charge to hold over that 100th of a second. But chances are the power supply in your laptop would have stayed on anyway.
But, most likely replacing your power supply in your computer will fix it.


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Response Number 4
Name: Lajon4Sevendust
Date: August 7, 2004 at 07:56:33 Pacific
Reply:

Hello,

Thanks a lot. I didn't know there was a difference. I will hopefully get a new power supply soon and let you know whether it fixed the porblem or not. Thanks a lot for the help!!

Thanks,
Brandyn


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Response Number 5
Name: Kojow
Date: August 24, 2004 at 16:19:42 Pacific
Reply:

The Full-On option should turn your computer back on after the power comes back to it.


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