Well, actually replacing the file is not the best solution as well and it is not actually very safe. It's never safe to move any system files in the mounted VM - if it does not let you to remove/replace any file in running Windows - there is a reason for that, right?
I'd suggest to run system repair and fix some possible system misconfigs or even errors. Upgrade to Windows 7 - is actually Windows reinstallation - fresh Windows obviously works better as it does not have yet any errors or corrupted system files.
I'd suggest to run system repair and fix some possible system misconfigs or even errors. Upgrade to Windows 7 - is actually Windows reinstallation - fresh Windows obviously works better as it does not have yet any errors or corrupted system files.