I am running into a peculiar problem.
I just built a new system:
ASRock 770 Extreme3 Motherboard
AMD 555BE
4 Gigs of GSkill Memory
All the other parts have been swapped out and confirmed they not the culprit.
If use ACC it unlocks all 4 cores of my 555BE processor. If I install a 32 bit OS (Windows XP/Windows 7 32-Bit) it works fine. All cores are present and operational (but the RAM, of course, only detects 2 Gigs in a 32-Bit OS). If I install Windows 7 64-Bit, the system hangs half way through the install process, when it starts Windows between the initial installation and finishing the install. It usually stops after loading disk.sys. If I disable ACC, Windows 7 64-Bit will install. If I enable it after install, it will fail to load.
Even stranger, if I disable the two extra cores (but leave ACC on), Windows 7 64-Bit will still not load.
Basically, why would it be possible for the feature (or cores) to work in 32-Bit but not 64-Bit? Or why does Win7-64 hate ACC but 32 bit doesn't?
I've tried:
Safe mode has no effect and neither does startup repair.
I have updated to the most recent BIOS. I can't think why it would work in 32Bit but not 64Bit.
Memtest86-ed for an hour with no errors. Windows memory test with no errors.
Tried different hard drives. Tried SATA3 and SATA2 controllers on the board.
Tried disabling USB and other stuff, switching out power hungry video card for a small one. The problem is 100% reproducible, and is present even after install.
Unbuntu Live CD (works with ACC), Windows XP (works with ACC), Windows 7 Professional 32-Bit (works with ACC), Windows 7 Professional 64-Bit (doesn't work with ACC, but works with it disabled).
Any ideas why 32-Bit works but no 64-Bit?
I just built a new system:
ASRock 770 Extreme3 Motherboard
AMD 555BE
4 Gigs of GSkill Memory
All the other parts have been swapped out and confirmed they not the culprit.
If use ACC it unlocks all 4 cores of my 555BE processor. If I install a 32 bit OS (Windows XP/Windows 7 32-Bit) it works fine. All cores are present and operational (but the RAM, of course, only detects 2 Gigs in a 32-Bit OS). If I install Windows 7 64-Bit, the system hangs half way through the install process, when it starts Windows between the initial installation and finishing the install. It usually stops after loading disk.sys. If I disable ACC, Windows 7 64-Bit will install. If I enable it after install, it will fail to load.
Even stranger, if I disable the two extra cores (but leave ACC on), Windows 7 64-Bit will still not load.
Basically, why would it be possible for the feature (or cores) to work in 32-Bit but not 64-Bit? Or why does Win7-64 hate ACC but 32 bit doesn't?
I've tried:
Safe mode has no effect and neither does startup repair.
I have updated to the most recent BIOS. I can't think why it would work in 32Bit but not 64Bit.
Memtest86-ed for an hour with no errors. Windows memory test with no errors.
Tried different hard drives. Tried SATA3 and SATA2 controllers on the board.
Tried disabling USB and other stuff, switching out power hungry video card for a small one. The problem is 100% reproducible, and is present even after install.
Unbuntu Live CD (works with ACC), Windows XP (works with ACC), Windows 7 Professional 32-Bit (works with ACC), Windows 7 Professional 64-Bit (doesn't work with ACC, but works with it disabled).
Any ideas why 32-Bit works but no 64-Bit?
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