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Turn Pc On, Turns Itself Off, Then Back On


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#1 4ward_tristan

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Posted 04 November 2007 - 07:33 PM

just upgraded my pc (well about 3 weeks ago). specs are

q600 g0

ga-p35-ds3p

2x 1gb gskill ddr2 1000 (F2-8000PHU2-1GBHZ)

gigabyte 2900xt 512mb

corsair 620watt modular psu

80gb seagate ide(as c: drive)

320gb seagate (as data)

long story short, this only started happenning on saturday (2 days ago).

when i power system on, it will turn on for about 1 sec, then turn off. then turn itself back on again, sometimes re-turn itself back off then on, sometimes stay on after the "first cycle"(so to say)

have tested psu, ram, both hdds, and stress tested my system (everything came back fine)

any ideas? thanks! =)
=)

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#2 garmanma

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Posted 04 November 2007 - 07:47 PM

All I can suggest is to take everything out of the case and try it on the table top with just the bare necessities. Then add things back one at a time to see if you can pinpoint the problem
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#3 Robert Isbell

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Posted 05 November 2007 - 12:04 AM

I'd suggest you try a BIOS update 1st. use the latest non beta BIOS for your motherboard.

#4 4ward_tristan

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Posted 05 November 2007 - 12:40 AM

hhmm i didnt even think of a bios update robert! thanks for the idea.

ill do a bench build last after anything else i/other people can think of garmanma, just due to the sheer amount of unmotivation i currently posses =p thanks for your input.
=)

#5 dc3

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Posted 05 November 2007 - 01:43 AM

You're probably as methodical as the rest of us when it comes to trouble shooting so this is pretty much just going to be a reiteration of your actions. Recheck all of you connections, especially the CPU power connector, make sure that all cards and modules are seated properly, and make sure that you not shorting to the case somewhere, clear the CMOS. If you do the minimal build that garmanma has suggested and it works look for a short from the case to the motherboard.

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