My PC just turns on and off repeatedly

Asus M3n78-em motherboard
March 21, 2010 at 19:17:41
Specs: Windows 7 x64
So I turn on my pc and i got a message of
my bios, a bad overclocking, I press F2 to
restore defaults option. When it boots up
again I see another message, it was the
CrashFree utility V3, so i though that my
bios got corrupted. I followed the steps on
the manual and i install the new bios, but
now, my pc just turn on for 5 segs then, it
shutdowns and turns on again until i unplug
the voltage cord. I don't have asus technical
service office in my country.

Thanks


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#1
March 21, 2010 at 23:17:38
Unless the 'CrashFree utility V3" message was accompanied by an error message then I think that was just part of the normal posting screen display.

I think there's a good chance you messed up using the crashfree utlity. Check your manual and try again.

You don't need to have a actual Asus support center in your country in order to get assistance. There's Asus forums that may be able to help and you can fill out a service request form here:

http://asuswiki.asus.com/usaSupport...

You're not really green until you're soylent green.


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#2
March 22, 2010 at 02:06:41
U don't need to update the bios. If it's bad overclock reset using jumper or cmos battery.

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#3
March 22, 2010 at 06:44:24
I tried to reset the cmos removing the jumpers, battery and
nothing, and the manual is not very helpful, besides the PC
shutdowns after 5 segs. I was thinking in buy another cmos
chip??? maybe???

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Related Solutions

#4
March 22, 2010 at 12:06:24
It would be the bios chip if you were going to replace anything. And I don't know how easy that might be. The bios is a programmable chip. So you'd need the chip and it would need to be programmed. Then there's the problem of actually replacing the chip on the motherboard. It may be soldered on or may be difficult to remove because of its socket type.

You may just want to look around for the same model motherboard. You could easily end up spending $50 trying to fix the one you have and that likely would be enough to buy one on ebay.

You're not really green until you're soylent green.


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#5
March 22, 2010 at 12:09:33
That's assuming the problem is the motherboard. It's probably a good idea to temporarily disconnect all the drives and remove all add-on cards except video and see if you get a posting screen. If it posts then one of the removed items is at fault.

Try swapping out the power supply if you have another one handy.

You're not really green until you're soylent green.


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#6
March 22, 2010 at 14:54:52
I'm gonna check with more careful the motherboard tonight,
the bios chip is in a socket so i think i can change it.


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#7
March 22, 2010 at 15:19:03
If it's in a regular DIP soscket then it should be easy to remove. But it must be replaced with one from the exact model motherboard not just one that fits in the socket.

You're not really green until you're soylent green.


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#8
March 22, 2010 at 20:38:40
Nop, still the same, everything works fine in the other pc

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#9
March 22, 2010 at 21:18:15
Probably the motherboard or bios then.

You're not really green until you're soylent green.


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#10
March 22, 2010 at 21:22:12
I'm gonna order a new bios chip, i will keep this thread
update.
Thanks a lot guys.

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#11
March 22, 2010 at 21:41:49
OK, just make sure it's for that exact motherboard.

You're not really green until you're soylent green.


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