Ok being the adventurous (read stupid) user that I am I tried manually rolling back to the ACPI Hal, and now Parallels VM crashes right before user login screen with attached screen shot. I can boot into Safe Mode, and Fusion can boot with no problems. I have tried switching number of processors, etc, and nothing has helped. Any thoughts or advice?
Not a problem -) Just either a) boot to the safe mode, open the regedit (Start->Run->regedit.exe) and delete the key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\intelppm or b) 1. Attach Windows Installation CD to Virtual Machine. 2. Change boot sequence for Virtual Machine to boot from CD 3. Start Virtual Machine. 4. Once you see a first prompt from Windows, type "R" to enter recovery console. 5. In Recovery Console wait for a prompt to choose your installation, type '1' followed by Return and enter administrator password 6. Run the following command: Code: disable intelppm You will see service current status SERVICE_DISABLED 7. Exit Recovery Console typing 'exit'. 8. Virtual Machine will be restarted, and Windows will boot properly.
Thanks for the quick reply, I happened to find this right after I posted and was coming back to report.
Very interesting information. The more I read the more I understand. Does the registry key deletion or console code revert the vm back to single processor?
afaik no, but I can't really say with confidence (it's not my work-area), the only thing I know for sure, that there are certain situations when driver intelppm fails and causes BSOD.
BTW the whole experiment was stupid of me, because I didn't pause to think through the fact that I have a 4 processor PowerMac and really SHOULD be running the multi processor HAL! I wasn't even able to boot with BootCamp until I used the very useful tech note, managed to boot and then reverted my the multi processor HAL using "RollBack Driver."
