I OCed my 955 from 16x to 17x and it is running fine. It is a Black Edition so the multiplier isn't locked. Also the 760GM can unlock multipliers. 1st I left the unlock multiplier setting in the BIOS at disabled, then I enabled it but had the same issue.

When I boot into XP or Ubuntu the CnQ feature is disabled. Is that normal? Is there a setting I missed in the BIOS to do both (OC & CnQ)?

Thanks,
Brad

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MSI 760GM-E51
Phenom II 955 BE C3 @ 3740MHz W/XIGMATEK HDT-SD964 Cooler
2x2GB G.Skill DDR3-1333 CL8-8-8-24 @1466MHz
Nvidia GTX 260-216

I could be wrong (#*cough*#) but that's the single biggest drawback with BIOS OCing.

Consequently for mild OCs I use K-10stat which keeps 4 power states, changes automatically and keeps C&Q active.

If you put k-10stat in your startup use a target line like this:
C:\K10STAT141\K10STAT.exe -lp:1 -ClkCtrl:2 -StayOnTray -nw

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Spider: Phenom II 955, Antec Kuhler 920, GA-MA790FX-DS5 (F8g), ASUS 5870/V2, ASUS Xonar D2X pcie,
OCZ2N1066SR2GK (4x1gig @800), Antec Truepower New 750, Fractal Design's Arc Midi Case.
#2: A64 X2 4200+, ASUS A8V-D, SAPPHIRE AGP 1950PRO