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ASUS Support Home Location : Forum > Motherboard > P5GC-MX/1333  
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  Topic : [Problem]CPU Over Voltage Error New Topic
amrpee
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From: Sri Lanka
Posted:4/17/2010 3:51:00 PM # 1
Hi
I have been using a Asus P5GC-MX/1333 motherboard for over an year without a problem.
Recently I noticed CPU temperature indicated by PC Probe II, to be higher than usual with minimum cpu activity. About 380C where as, it was usually about 330C.
All fans working.
I rebooted.

On bootup, I got the "CPU overvoltage Error", press F1 to continue.

If I continue, the PC works fine, except that the cpu temperature is higher as I mentioned above.

Now, ever after, on every boot up, I get the CPU over voltage error.

Note that I have not made *any* changes in the bios, motherboard or any software recently. I have *not* attempted any overclocking.
This problem more or less suddenly appeared.
(I mention this because when I searched for the cpu overvoltage error" in this forum over clocking was mentioned, which I have not done).

On booting I entered the bios setup and checked the CPU voltages indicated:

VCORE = 1.632V (in red)
3.3V = 3.28
5V = 5.017
12V = 12.144

CPU temp = 500C
CPU fan = 2636

CPU I am using is Intel P4 Dual core 2GHz E2180
OS am using is Vista.

Am posting this from another computer as am afraid to run the computer with the problem incase cpu or motherboard may get damaged.

How do I set about resolving this problem ?
VCORE seems to be too high.
What would be causing this sudden cpu over voltage error ?

Thank you.

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stealth
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From: Greece
Posted:4/17/2010 4:51:00 PM # 2
Is the system overclock it?CPU voltage is too high, the cpu overvoltage error appears when the voltage is set over 1.6V, go in bios and load setup defaults, save and exit.At boot go again in bios and in hardware monitor check what value it says for CPU voltage.

stealth

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amrpee
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From: Sri Lanka
Posted:4/18/2010 1:25:00 PM # 3
Thanks stealth.

Nope the system was not set for over clocking. I myself bought the motherboard and assembled over one year ago and did not change any bios settings (except the usual things like set date and time).

I did what you asked.
- Load setup defaults.
- Exit and Save changes

Then on boot,
I still get the CPU Over Voltage Error.
Hardware monitor shows
VCORE = 1.624

I tried this a couple of times leaving a hour or two interval to let teh cpu cool just to make sure.
One time got VCORE = 1.616
Another time got VCORE = 1.640

Next, what other things should I try?

Thanks

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stealth
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From: Greece
Posted:4/18/2010 3:59:00 PM # 4

Quote:
Author: amrpee Posted: 4/18/2010 1:25:00 PM

I still get the CPU Over Voltage Error.
Hardware monitor shows
VCORE = 1.624

Next, what other things should I try?

That's strange.

Unplug the power cord from the wall outlet, remove the battery from the mobo (if possible replace it with a new one) and clear CMOS as the manual says to revert all settings to defaults.

Put everything back after 10' and try to boot to see what happens, if you get the same message again the only solution is to set the voltage for your CPU manually to the correct value.

If you tell me what CPU you have i will be able to tell you what is the correct voltage for it.

Edit: Sorry, you already mentioned that your CPU is the E2180...
Set the voltage manually to 1.3V.

stealth

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amrpee
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From: Sri Lanka
Posted:4/19/2010 12:52:00 PM # 5
Thanks very much for the help stealth.

I will try the procedure you mentioned and get back.
(only thing is I may have to wait for the next weekend to get some free time. Shall try before that if I get off early)

thanks.

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stealth
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From: Greece
Posted:4/26/2010 12:40:00 AM # 6

A little update to this.

I found another case with an overvoltage CPU like yours on a Greek technical forum, this time it was a Maximus Extreme s775 motherboard overvolting the CPU up to 1.7V.

Every try to clear CMOS, load set-up defaults or to set the voltage manually in bios didn't help, at last it turn out that the problem caused by bend pins in the socket.

So if you don't manage to lower the voltage with any other way i suggest to unplug everything from the motherboard and check the socket carefully for bend pins.

stealth

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A8N32-SLI Deluxe, AMD Opteron 185 2.6Ghz(Toledo)@3003mhz(273X11, 1.3v,HT 1365mhz), Asus EN8800GTX 768MB, Corsair Twinx 2048-3500LLPRO@DDR546 3-3-2-6 1T 2.8v, WD120GB SATA2, WD250 SATA2, X-Fi Fatality, NEC ND 4551A LabelFlash, PCP&C 750Watt Quad.
aairon
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Posted:6/14/2010 8:29:00 AM # 7
The voltage can not be set manually on this board. The indications are that the CPU is in the process of failing!. The normal voltage with this board and that CPU is between 1.28 and 1.3 volts if you can find another CPU to temporally replace the one you are using this will tell you whether the mother board is failing or it is the CPU. If you did a CMOS reset and the voltage stays the same then you need to try the above to narrow down the source of the problem.

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Mobo P5GC-MX/1333, Core2 Duo E7400 @3.633ghz, original 2.8ghz, 38c at idle, Stock intel P-4 cooler, Bios clock set@346 1.384ghz FSB, Patriot mem 6400EL 800 mhz@865 mhz 2 X 2gig, EVGA GTX-285-OC, Vista ultimate 32 svc pk2, Bios V.410 old retired Marine electrical engineer.
Michel_Angelo3
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Tech Points : 1
From: Portugal
Posted:3/29/2013 9:29:00 AM # 8
Hi have you solved your problem with de mother board? P5GC-MX/1333

I have the same problem

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Jon_Shannow
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From: United Kingdom
Posted:8/29/2013 3:13:00 PM # 9
I'm experiencing the same issue now . My PC keeps restarting occasionally . When I enter BIOS it can be clearly seen that one of the CPU voltage bars(3.3V) is in red showing 2.928V . No changes have been recently made which could have caused this problem and everything has been working fine so far . Is it actually worth trying to check all these troubleshooting procedures , since they didn't solve the other mate's problem ?

Asus Sabertooth 990 FX
AMD FX 6100

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staylowmovefast
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Tech Points : 1
From: United Kingdom
Posted:6/16/2015 6:18:00 PM # 10
Your PSU is faulty. It's spitting out unregulated voltages.>If you develope a sudden voltage error without ever changing any BIOs settings, this is usually the cause.

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