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CPU Over Voltage Error

Forum Index > Tech Support
Post a Reply
Azure.
Profile Joined July 2012
Australia13 Posts
September 30 2014 17:35 GMT
#1
I recently upgraded my graphics card to a gtx 750 ti and now my computer keeps crashing showing the "CPU over voltage error" when I start my computer back up.
I tried putting my old graphics card back in to see if it would stop it but it still crashes sometimes.

My specs are:
Windows 7 Home Premium 64-bit SP1
CPU:
Intel Core i7 870 @ 2.93GHz
RAM:
8.00GB Dual-Channel DDR3 @ 665MHz (9-9-9-24)
Motherboard:
ASUSTeK Computer INC. P7H55-M LX (LGA1156)
Hard drive:
931GB Seagate ST31000528AS ATA Device (SATA)
xM(Z
Profile Joined November 2006
Romania5281 Posts
Last Edited: 2014-09-30 18:57:22
September 30 2014 18:57 GMT
#2
- reset bios to factory defaults (remove the battery too)
- use a program to check the CPU voltage (like CPUz)
And my fury stands ready. I bring all your plans to nought. My bleak heart beats steady. 'Tis you whom I have sought.
Azure.
Profile Joined July 2012
Australia13 Posts
September 30 2014 19:43 GMT
#3
I reset the bios. The CPU voltage is 0.832V
Ctone23
Profile Blog Joined December 2012
United States1839 Posts
September 30 2014 20:38 GMT
#4
I had that same Seagate HDD, it failed on me and caused a slew of errors and problems. S.M.A.R.T. status should give you a heads up on the ASUS bios page if it has failed/failing..Just thought I would share.
TL+ Member
xM(Z
Profile Joined November 2006
Romania5281 Posts
Last Edited: 2014-09-30 21:09:37
September 30 2014 21:08 GMT
#5
On October 01 2014 04:43 Azure. wrote:
I reset the bios. The CPU voltage is 0.832V

- that's a good V for when the CPU is powered down somewhat (works at a lower freq for power saving). what's the V when the CPU is stressed at/or close to max?.
- does it still crashes?. (after the bios reset)
- have you removed the driver of the old GPU before installing your new 750ti?.
And my fury stands ready. I bring all your plans to nought. My bleak heart beats steady. 'Tis you whom I have sought.
Ropid
Profile Joined March 2009
Germany3557 Posts
September 30 2014 21:32 GMT
#6
What GPU did you have previously and what's the label on the PSU saying?
"My goal is to replace my soul with coffee and become immortal."
Azure.
Profile Joined July 2012
Australia13 Posts
September 30 2014 22:42 GMT
#7
My HDD is showing no errors.
The CPU seems to stay around that voltage no matter what load it's under. Yes I removed the old drivers.

My GPU before was a GT 430 and what label on the PSU are you asking about?

Is there any chance CPU overheating would cause this error? My is getting very hot, but I would think it would show an overheating error and not a voltage error if this was the problem?
Ropid
Profile Joined March 2009
Germany3557 Posts
September 30 2014 23:53 GMT
#8
I meant a large sticker on the PSU that might look like this: http://i.imgur.com/hfCurgi.png

In that example the PSU can provide 12 V * 20.8 A = around 250 W of power for CPU and GPU and drives.

Yes, the PC can crash if the CPU is getting very hot, but it has to be extreme. What temperatures do you see?

When you turn it back on, the BIOS might be wrong about what happened.
"My goal is to replace my soul with coffee and become immortal."
Azure.
Profile Joined July 2012
Australia13 Posts
October 01 2014 07:23 GMT
#9
This is my PSU sticker. http://imgur.com/LGGwBqS
I saw my CPU get up to 99c just before it crashed once. I know 100c is the auto shut off point so if that could cause the error I'm seeing that might be the cause.
xM(Z
Profile Joined November 2006
Romania5281 Posts
October 01 2014 08:25 GMT
#10
does your CPU fan spins? kinda dumb question but at this point it's between CPU and mobo that could be busted (the CPU is way less likely).
- try and check the V when CPU is at or around ~99C
- reseat everything including the CPU; it could be a pinning issue since you stressed the mobo when changing GPUs
And my fury stands ready. I bring all your plans to nought. My bleak heart beats steady. 'Tis you whom I have sought.
Azure.
Profile Joined July 2012
Australia13 Posts
October 01 2014 10:28 GMT
#11
Yeah the fan is spinning.
The V seems to stay at 0.832v all the time and how do you reset the CPU?
xM(Z
Profile Joined November 2006
Romania5281 Posts
Last Edited: 2014-10-01 11:14:48
October 01 2014 11:14 GMT
#12
On October 01 2014 19:28 Azure. wrote:
Yeah the fan is spinning.
The V seems to stay at 0.832v all the time and how do you reset the CPU?

- reseat is when you take it out of its socket then put it back in
- 99C at 0.83V doesn't make sense unless there's something wrong with the fan, the thermal paste between CPU and heat-sink, or the thermal contact between CPU and heat-sink is screwed.
maybe you hit the fan+heat-sink and nudge it off its screws or something.
And my fury stands ready. I bring all your plans to nought. My bleak heart beats steady. 'Tis you whom I have sought.
LaNague
Profile Blog Joined April 2010
Germany9118 Posts
Last Edited: 2014-10-01 13:43:00
October 01 2014 13:42 GMT
#13
CPUs crahes when undervolted, overvoltage should just cause too much heat or in extreme cases kill the CPU.
maybe the message just assumes overvoltage is the cause of the thermal shutdown.



what happens when you use your old GPU?




Also, your CPu should be at around 40 when idle and not go over 80 when working, you dont even overclock it, right?
If it goes over that, the cooling isnt working.
Azure.
Profile Joined July 2012
Australia13 Posts
October 02 2014 14:59 GMT
#14
Reapplied the thermal paste and it seems to be running better now. I think the cpu was just overheating.
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