XP includes several features to ensure that a computer and the applications and devices installed work correctly. These features help solve problems resulting from adding, deleting, or replacing files that an operating system, applications, and devices require in order to function. Most of these features are available on all three versions. The recovery feature or features used depends on the type of problem or failure encountered. Please read the Microsoft Developer Network (MSDN) article, subject "Description of the Windows XP Recovery Console (Q31405
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a. Device Driver Roll Back [Q306546] - used when a device driver has been recently updated and cause system unstability (other than a printer driver). It restores all system and application settings back to those that were in effect at a point in time being specified by the user. Affects no other files or settings. Printer drivers cannot be restored using it, (See: "Steps to Manually Remove and Reinstall a Printer Driver (Q135406)").
b. Disable the Device [Q244601] - used when installing and the specific hardware devices causes problems. (Control Panel, Device Manage, "the device" and check the Disable Device in Properties).
c. Last Known Good [Q307852] - used when suspecting that a change made before restarting the computer is causing it to fail. It restores the registry settings and drivers that were in effect the last time the computer started successfully.
d. Safe Mode and System Restore [Q315222] - used when the system still works. It uses only basic files and drivers (mouse, except serial mice; monitor; keyboard; mass storage; base video; default system services; and no network connections). Then use System Restore to restore all system and application settings back to those that were in effect at a time when the system was working optimally.
e. System Restore [Q304449] - used when device drivers have recently been updated using Device Driver Roll Back did not restore stability. It restores all system and application settings back to those that were in effect at a point in time being specified by the user. Affects no other files or settings.
f. Recovery Console [Q307654] - used when restarting the computer with the installation CD and when prompted during the text-mode setup, the Recovery Console is started by pressing R. It starts, using only basic files and drivers (mouse, except serial mice; monitor; keyboard; mass storage; base video; default system services; and no network connections).