need help on mobo P4P800SE

hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

Hi everyone,

When I connect the power reset switch (from the case) to my mobo, the power just keep turning on and then off repeatly. If I just disconnect this power
reset switch , then the system can boot. Please explain to me if you know about this problem and help me to resolve it.

Thank you very much.
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Xal · Posted: Tue Apr 25, 2006 2:13 am Post subject:

try pressing the switch twice when you turn on. I suspect you are using the wrong type of switch. The switches on old AT type cases make contact when they are switched on untill they are switched off, the new switches make contact only when the switch is pressed. Try using your reset switch instead of the power switch.
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

Xal · Posted: Tue Apr 25, 2006 4:02 am Post subject:

It just needs to short the pins on the motherboard briefly for the power supply to come on

The real switch is inside the power supply these days, think of it as a kind of wired remote.
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Phenom II x4 955 @ Stock
Asus M3N78-EM
4gb Corsair XMS2 DDR2 667 @ 800
1gb Powercolor Radeon HD 5850 @ Stock
X-fi Extreme Audio PCI E
Nexus 600W Silent PSU
Nexus Fans
Custom case

meobius · Posted: Tue Apr 25, 2006 5:58 am Post subject:

check to see if one of the buttons are stuck or broken
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

ToggleHead · TWEAKGURU Joined: 03 Mar 2004 Posts: 4360 Location: Jersey

i cant say its GREAT for it.....you should avoid cutting power abruptly.....better to be safe than sorry

...how often do you use your reset switch anyway? I barely turn my machine off...lol
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

ToggleHead · TWEAKGURU Joined: 03 Mar 2004 Posts: 4360 Location: Jersey

ive had the power cut on my rig a couple times...and done it myself by accident too.....so far im ok, and it hasnt harmed anything....but im not about to test its tolerance
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Zero_Fresh · Posted: Tue Apr 25, 2006 2:39 pm Post subject:

I have had power abrubtly cut off from my machine a few times, can't say it had any permanent effeects that show. I don't know if it effects the longevity or not, but who actually holds onto computers long enough to find out their longevity anyway? =P
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fussnfeathers · Lord of the Tweak Joined: 14 Dec 2004 Posts: 2763

Cutting power abruptly won't hurt the hardware at all. Windows will probably puke after a few times, though.

Anyway, pulling the plug while the machine is running really isn't any different from the PSU shutting off after a regular system shutdown. Remember, before Windows 95, the only way to shut your system down was to kill the PSU or power strip the machine was plugged into.

Now, cutting the power suddenly, then reapplying power immediately afterwards (i.e. before the mobo has a chance to discharge remaining power) can be bad after awhile. You're sortof "shocking" the power caps, resulting in a mild overvoltage.
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hochoi · TweakNOOB Joined: 22 Jun 2003 Posts: 212 Location: auburn

sickofsoyo · Posted: Wed Apr 26, 2006 3:35 pm Post subject: