Troubleshooting failed upgrade to Windows 7?

"Might be some useful logs files you can see.

Then I found the file C:\$Windows.~BT\Sources\Rollback\setupact.err had some useful info.

Details here."

"Open up Run box and open MSCONFIG.
Click on Services Tab and Hide Microsoft Services.
Disable all the services on the list. Same thing with all startup items.
Open CMD with elevated privileges.
Type net user Administrator password and press Enter. It will say command completed successfully.
Type net user Administrator /active:yes and press Enter. Again it will say command completed successfully.
Restart the computer and then log in under the Administrator account with the password as password.
Start the Windows 7 Upgrade again, this time it will finish.

I have tried it on four computers with the same problem that would not install Windows 7 Upgrade from Vista SP2."

"The setup*.log files are likely red herrings. Instead, I suggest using a tool like Nirsoft's 'Bluescreenview' utility to inspect the memory dump file that will be created alongside the setup*.logs: this will show the call stack at the time of the crash, and the module at the top of the call stack will be the cause of the blue screen. Try to replace the hardware in question or update the driver.

Case in point: I experienced this problem trying to upgrade an OptiPlex 390 from Vista to 7. Nirsoft pointed at the mouse driver: I removed the Microsoft Sculpt Desktop dongle in favor of a Logitech wireless desktop dongle, re-ran the upgrade, and it completed without incident."