Occasionally, a user might experience reliability problems. For example, an installation might update a driver with a less-reliable version or an application might overwrite files with incompatible versions. In some cases, uninstalling an update or application will not reverse every change that has been made. To recover from this problem system restore is developed, System Restore in Windows 7 have many new features but before using them, check what’s the real difference is.
In rolling back all system changes made since the restore point, previous versions of System Restore also reversed system changes unrelated to the problem:
- Applications and drivers that were installed after the System Restore point will be removed.
- Applications and drivers removed after the System Restore point will be restored.
These earlier versions of Windows made it difficult for users or IT professional to determine which components would be affected by restoring to a System Restore point. Users were predictably frustrated when they discovered that some of their applications were no longer available. Often, these users called the support center for help—once again consuming the IT professional’s time. With Windows 7, the user or IT professional can view a list of software changes (based on applications listed in Add/Remove Programs) before rolling Windows 7 back to an earlier state. By offering a more complete explanation of a System Restore outcome, such as removing an application that should be preserved, an IT professional can choose a different restore point or make certain to reinstall the application afterward.
In Windows 7, restore points will also be available from system images created by the end users (similar to Complete PC backups in Windows Vista), allowing System Restore to roll-back to a point further back in time than the local System Restore storage would allow. In other words, backups to external hard disks can be used for restore points, too.
Like many other aspects of Windows 7, System Restore enables IT professionals to be more effective and productive through the use of PowerShell. PowerShell can create a System Restore point or restore a computer to a System Restore point, even remotely.
Therefore, while on a support call, IT professionals can connect to a computer from across the network and create a System Restore point before making any changes that might negatively affect the computer’s stability. Scripts that perform troubleshooting or configuration tasks can automatically create a System Restore point to allow changes to be easily restored. Finally, an IT professional could use a PowerShell script to restore a computer to an earlier System Restore point, even across the network.
Source Microsoft
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