Asus P8z77-v 3770k - Can't increase CPU ratio

Hey guys

Just got a new board, CPU and RAM about a week ago. Happily got it humming at 4.5ghz. Thismorning I restarted my PC to install some updates, and it wouldnt reboot. After a few failed reboots it gave me the old 'overclocking failed' message.

Dropped out extra sticks of RAM, and set everything back to stock, and it works fine.

I jumped back into bios to have a look at re-overclocking, and all of a sudden it won't let me push my CPU ratio over the 'base' value of 35, even with turbo mode enabled.

It's as if its acting as though it doesn't have a K series CPU in it, and is locking me out of the multi.

I have reflashed the BIOS to the latest one, with no success. I'm a bit stumped, so any help would be greatly appreciated.

Cheers
Duvey
8 answers Last reply
More about asus p8z77 3770k increase ratio
  1. The 'Turbo Ratio' and 'Internal PLL Overvoltage' settings are not showing in BIOS either, which were before, and from what I can tell should be showing with a 3770K installed.
  2. Got any pics?
  3. http://i.imgur.com/q69Ny.png <--- note the lack of turbo ratio and internal pll overvoltage options
    http://i.imgur.com/R9k3A.png <--- won't allow me to change ratio here
    http://i.imgur.com/au8j9.png <--- main page
    http://i.imgur.com/MRhMf.png <--- cpu configuration
  4. What memory?

    I suggest you clear CMOS load default values and try again. You do not need to touch anything else other than the CPU Ratio and Vcore.
  5. GSkill Ripjaws 1866mhz 9-10-9-28.

    I have tried clearing the CMOS. No dice. I only mentioned that these settings because they disappeared after the initial crash, at the same time the bios stopped letting me increase the CPU ratio. I am still able to set the Vcore.
  6. Set ai overclock tunner to manual .Nuff said..
  7. robustus64 said:
    Set ai overclock tunner to manual .Nuff said..


    Haha, yeah that was the first thing i did, just took the screenshots directly after resetting to factory settings.
  8. I have asus mtherboard aswell and sme thing happend to me !!! any idea? plus now my pc hangs every now and then.
    Please help !!!
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