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CPU stuck at 1.6v new build auto settings

deviate_sic

deviate_sic

deviate_sic

Associate
Joined
8 Mar 2012
Posts
9
Hey guys wonder if you could lend me your expertise,

I have just gotten a shiny new P8z68-v LX with a core I5 2500k cpu, on first installation the bios shows the cpu at 1.65 volts!! this is on factory settings, the temperature is in the 70-80's, this is of course insane, I have entered the bios and attempted to change anything I can see that may cause a voltage hike such as LLC turbo and so on also I have tried the voltage offset to the maximum it will go ( negative 0.315) but nothing alters the core voltage, I reboot, the settings are retained and the bios says it should be setting it at 1.23 (before offset) but the actual voltage will not deviate from 1.65 :|

I have no idea what is going on, I have a bit of a dated PSU but I am unsure if this could be the issue? I have ordered a brand new Fatality OCZ 750w bronze, just in case but do you guys have any ideas? is it faulty hardware perhaps? or have I done something wrong?

Thanks in advance for any help you can offer.
 
CPU fan spinning? Did you apply thermal paste?

Sounds like the bios may need updating.

Just to check 1.65V - this is definitely core voltage and not your DRAM voltage is it?

p.s. you need to boot into windows before you start overclocking really.
 
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Reset to default settings and check your CPU fan and paste.

You'll blue screen trying to get into windows with that offset.
 
I haven't tried to OC at all this is factory default settings on a new build, it's definitely the Vcore not the dram and the vcore setting IS for 1.23v in the bios but the actual cpu is running at 1.65v no matter what I do with that setting, I have applied thermal paste correctly CPU fan is spinning fine.

I am reluctant to flash the bios as the chip is supported by the default bios and at the moment if it is faulty hardware I can return it but I am afraid that if I flash the bios they won't accept a return? could this be the PSU or a hardware issue?
 
Where are you getting this 'CPU is runnng at 1.65V' from? Can you take a picture?

You do want to put the offset back to auto though.

PSU isn't going to cause this. I need to see a picture of what you're referring to.
 
Okay you have the same mb as me so the very first screen in the bios where you see all the bar graphs at the top and the three operational settings

This isn't MY screen exactly but it's the same screen the only difference is that the cpu voltage is 1.65 and in red and the cpu temp is 70-85 and also red.

asus-p8z68-v-pro-bios-1-1.jpg


This second image is in the advanced section after this screen, again this isn't my EXACT page but the important part is that the cpu voltage on mine on this screen reads 1.2 something volts not 1.6 but the front screen still always comes up with over 1.6v no matter what I do.

asus-p8z68-v-pro-bios-22-1.jpg
 
I would take the CPU vcore from the second screen in the case of a mismatch. You aren't going to get an idea of what it's actually like until you install Windows and download CPUZ. This should be your next step. I don't think the board itself is capable of over volting your CPU this much. I would be extremely surprised if it could :). The temperatures are a concern but not dangerous yet. If the heatsink is on securely with the paste on correctly and the fan is spinning it's quite difficult for it to get this hot.

You should install Windows and see what the readings are in CoreTemp or RealTemp then post back. BIOS readings can be wrong so I wouldn't be too concerned if I were you at this stage.

What version of bios did yours come loaded with? Mine came with the most up to date but if yours is older it could be worth updating it.

You don't have to worry about updating the bios - it doesn't void any warranty and it isn't going to make your chip uncompatible with the board.

p.s. make sure you revert back to default board settings while installing windows - the last thing you want is a BSOD while installing and you most probably will with that much negative offset
 
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Well I could try this as you say but I did originally try to just go through the set-up but as it stands the post checking is giving a cpu intermittent overtemp at the boot and the one time it did get through post check it BSOD'd as soon as windows setup tried to start but I think it may have had the offset running, I'll try again though with the offset off and defaults loaded and see if I can get through a windows install and get some cpu-z and speedfan readings.

Thanks for the help man
 
My gut says something is wrong with something (vague I know :p) but you can't get any further finding out what without trying to install Windows.
 
haha well there is something wrong, but I've never seen anything quite like this before, I have to gather the willpower to install it all over again now hopefully it is as you say and being misreported in the bios, hopefully I don't fry my chip trying to find out lol
 
Well I reinstalled it all into my chassis to try what you suggested and now I don't get a boot at all, all the fans switch on, the board has power but no display no beep, no bios.

I think I'll just return the mb and cpu and get replacement and start over next week when the new PSU and gpu arrive haha.
 
Clear CMOS again. Long shot but you'd be surprised how effective it can be :p

I say this because it was working fine before so unless you've overlooked something while re-building or damaged it accidentally it *should* come on still
 
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Oh and try disconnect the graphics card if you have one in already and the RAM apart from 1 stick (any slot) and use the onboard graphics.

Then turn the power off on the PSU but leave it plugged in. Hold down your power button for 30s to drain the system of any remaining voltage.

Then re-try
 
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