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01-26-2010, 03:57 PM
(This post was last modified: 01-26-2010, 03:58 PM by GigaFan.)
I have Athlon II X3 425 + GA-MA770T-UD3P. As known, this motherboard has south bridge SB710 and allow unlock cpu cores and L3 cache. I've changed necessary settings in BIOS and now in POST bios recognize cpu as Phenom II X4 B10, but when Windows 7 begin start, computer crushed. The last version of BIOS is F5 and it has menu "Control Core 2" and "Core Control 3", so I can temporary disable first and second cpu cores. I disable both cores but cpu became Phenom II X2 525. Then I've analyzed BIOS file using Modbin and found locked menu "Control Core 4" and "Core Control 5". I unlocked them, but after reboot comp write "MAIN BIOS checksum error" and start to copy BIOS from DualBIOS. It's help me out of trouble. DualBIOS - great thing! I've tried various versions of Modbin, all of them do incorrect BIOS checksum. I've tried also various versions of CBROM and found version, that do right checksum after I unpacked and packed back any BIOS module. Now AwardMod Tool and other utilities write that all checksum are right. But BIOS write again "MAIN BIOS checksum error". Which checksum is need for BIOS else? Thank you.