Hy. need some help, guys. i have a gigabyte ga-m720-us3 mobo with nvidia nforce 720d chipset and latest bios for my board (f6) and Phenom II 550 be. in my ACC function i have only one option: nvidia core calibration and no EC firmware option. i set it on auto and unlocked my phenom 550 two dorment cores . didn't mess with nothing else at first. windows booted just fine. it's all working great( ie, office, ran everest stability test 2hrs, prime95 small fft 2.5 hrs). the problem's starts when i'm trying the prime95 blend test. it just freezes. i have to manually restart because it just hangs. i've tried diffrent "All cores" calibrations, raising the nb and core voltage(up to +0.100 - 1.47v), disabling amd cool n' quiet, clearing CMOS. nothing works. so... i have a couple of questions:
- am i supose to have the Ec firmware option in my bios(f6 bios on nforce 720 chipset) or does it exist in a previous version (f5)?
- is this what's causing the problem?
- reinstalling the OS would make any difference?
Thank you! Any and all advice would be most welcomed! Help a poor guy in need!