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Help - strange problem with multiplier stuck at 36 with IB 3750k and Asrock Z77 Extreme 4

post #1 of 16
Thread Starter 
Been overclocking my Ivy Bridge for the last few days slowly increasing multiplier and adjusting offset voltage, testing and tweaking. Cooling with water i got it to 4.7 and it seemed pretty stable.

Then it crashed, now I can boot and everything seems fine but i can't manually adjust the multiplier beyond 36, and even if i choose some of the preset overclocks all cpu-z sees is a 36x100 under load.

Am I missing something, or is something not working properly any more? Bios is 1.7 (latest).

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post #2 of 16
What I would try, is first reset the UEFI/BIOS to the Safe Default Values, restart, start UEFI again and try it again then.
Make sure SpeedStep and Turbo technologies are both enabled. smile.gif
 
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post #3 of 16
Thread Starter 
Did try exactly what you said, wasn't sure if i'd reset to default and then restarted so tried it as you said, but no joy.
Both Speedstep and turbo are enabled. Thanks for responding by the way smile.gif

I've cleared CMOS using button on rear of mobo back panel, also left overnight with clear CMOS jumper on clear, also removed battery. It still seems to have this memory of a 47 multiplier no matter how much i try and clear it.

Feel like i've tried all the things I can think of but I bet there's something I'm overlooking.
post #4 of 16
Just for all certainty: is your multiplier locked as in disabled/you can't edit it, or is it like everytime you change it and boot into windows, it just doesn't appear to be working?
 
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Swiftech Apogee HD 7x Yate Loon D12SL-12 XSPC X2O 750 Dual Bay Reservoir+Pump Phobya Nano-G 14 Silent Waterproof 140mm - 1000rpm 
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Hard DriveOptical DriveCoolingCooling
Crucial M4 512GB External optical drive Swiftech MCR420-QP 480 Radiator Yate Loon D12SL-12 1350RPM x15 
CoolingCoolingCoolingCooling
Alphacool VPP655 -T12 x2 Alphacool Repack - Dual Laing D5 - Dual 5,25 Ba... DangerDen Delrin 90° G1/4 connector EK-FB KIT RE4 - Acetal+Nickel EN 
CoolingCoolingCoolingCooling
EK-FC Bridge DUAL Parallel EK-FC7970 - Nickel EN Acetal x2 EK-FC7970 Backplate - Black x2 EK-VGA I/O bracket HD7970 x2 
CoolingCoolingOSMonitor
Feser Tube UV - HighFlow - 3/8 ID - 1/2 OD - BLACK Lamptron FC9 Fan Controller 4-channel 50W FC-9-... Windows 7 Ultimate x64 Samsung Syncmaster S27A750D x2 
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Crucial M4 128GB 7 TB External HDDs 2.2 TB HDDs in Raid0 Black Ice GT Stealth 360 
CoolingCoolingCoolingCooling
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CoolingCoolingOSMonitor
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post #5 of 16
Thread Starter 
It's weird, I can edit it but when I click to save or move to a different field it reverts the value back to a maximum of 36.

It was working, and I know when idling/browsing it lowers the multiplier to 16 or so, but then under load (ITB/Prime) it'll go up.

If I enable Turbo 30 mode (different to normal turbo mode) I can select some default overclock speeds up to 4.6ghz. Whichever of those I select it still shows a 36 multiplier under load.
post #6 of 16
my problem is the same, video bios
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Core i5-3570K ASRock Z77 Extreme4 GTX 570 Inno3D  2x4GB Corsair Vengeance DDR3 1600Mhz 
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post #7 of 16
I just began having this same problem with a i5-2500K and an Asrock Z68 Extreme3 Gen3 with the multiplier unable to go above 37 when it was rock stable for the last 6 months at 43. Any ideas?
post #8 of 16
I'm in the same boat too frown.gif. i5-3570K multiplier locked at 38x max, on ASRock Z77 OC Formula. Been rock stable at 4.2 GHz frown.gif
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post #9 of 16
It appears that if you are having this multiplier lock problem you have to flash your bios to the newest version and change the core settings from AUTO to PER CORE. It appears that if updating your Bios and changing the core settings from "AUTO" to "PER CORE" doesn't work. Your only other option is to send the board in for rma.
post #10 of 16
Quote:
Originally Posted by BiG StroOnZ View Post

It appears that if you are having this multiplier lock problem you have to flash your bios to the newest version and change the core settings from AUTO to PER CORE. It appears that if updating your Bios and changing the core settings from "AUTO" to "PER CORE" doesn't work. Your only other option is to send the board in for rma.
That is what I am going to do now. Do you think the CPU have something to do with this?
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i5-3570K
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Samsung 840 Pro  1TB Seagate HDD 1TB Samsung HDD Blu-ray 
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RASA 750 RS240 Windows 7 Ultimate 64-bit 27" Asus 1440p Max Nighthawk X8 Green Mech 
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