The first step with recovery is to use Windows Safe Mode option during startup. One Safe Mode option that will help troubleshoot boot problems is to enable Boot Logging which will create a log and help identify the device or driver that is causing the problem during startup. When Boot Logging is enable, Windows boots normally, until the device or driver that is causing the problem either crashes the system or completes starting up but causes an error message in the Event Log.
While booting, Windows creates a log file that lists every step processed that is attempted and completed. You can then reboot in to Safe Mode and review the log file named ntbootlog. Below is an example of ntbootlog. SYS Loaded driver pci. SYS Loaded driver intelide. SYS Loaded driver disk. SYS Loaded driver fltmgr. Vista menu will look slightly different than XP. You will be returned to the menu screen and you should see Enable Boot Logging in blue displayed at the bottom of the screen don't worry if this screen is not displayed and Windows starts to boot :.
If the problem does not cause Windows to crash, and after startup has completed, you can review the ntbootlog. Look for any signs of problems loading device drivers.
If you find problems, go into Device Manager and disable the device or uninstall the program, then reboot again. If the problem does not occur then you know it was that device and you should check the vendor website for new drivers or known issues.
If your problem does cause Windows to crash, reboot into Safe mode by selecting Safe Mode from the Advanced Menu screen. When reviewing ntbootlog. More than likely the problem will be toward the end of the file since that was the last item logged before crashing. When you identify the problem, either uninstall the application or go in to Device Manager and disable the device. Reboot your Computer and see if the problem still exist.
If it boots without crashing, check the vendor website for new drivers or known issues. If you are still having problems, enable Boot Logging again to see if new events are logged after you have disabled the device or uninstalled the program. If you are unable to fix the problem, you may need to have a Computer shop troubleshoot the problem for you. Notes on Boot Logging:. Your email address will not be published.
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Watching The Net. Boot logging appends entries to Ntbtlog. Comparing normal mode and safe mode entries enables you to determine which services run in normal mode only-one of which must be the cause of the startup problem if Windows is able to start in safe mode successfully. The following lines are sample Ntbtlog. Note that not every "Did Not Load Driver" message necessarily indicates an error that would prevent Windows from booting, because many drivers are not required for Windows to start.
To repair problems caused by problematic drivers when you can start safe mode, follow these steps:. For the services that run only in normal mode, disable those services one at a time, trying to restart your computer in normal mode after you disable each service. Continue to disable services individually until your computer starts in normal mode. To repair problems caused by problematic drivers when the computer does not start in safe mode, follow these steps:.
SYS Note that not every "Did Not Load Driver" message necessarily indicates an error that would prevent Windows from booting, because many drivers are not required for Windows to start. If you have a LoadFailed error check that the file really exists. Be careful. If you see a large delay on the item "Enumerating This delay was caused by the previous item. Below the "Enumerating" event you should find the associated "Enumerated" event.
The enumeration delay is printed on the "Enumerated" event. To quickly restore the original sort order of Bootlog. To analyze "bootlog" file in spreadsheet software click on the Save button to export this file to the CSV file format.
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