Just bought a Athlon II X3 435 and Biostar A880G+ mobo. Tried using the ACC feature on auto, no luck. Upped the cpu vcore .05 and then .1 no luck there. Then tried to up the CPU NB voltage the first couple of increments and still no luck. Tried switching ACC to manual and tried various combination's of +/- 2 to 8% per core with and without CPU vcore and CPU NB added voltage. Can't get PC to post with ACC on auto or manual. Think I just got unlucky and have a dud. This is my 1st attempt to unlock a core and wondering if anyone has anything else I could try or if I'm doing it wrong. Haven't updated the BIOS, would that do anything for me? Also wondering how to attempt to unlock L3 cache if I can with that mobo. Thanks!