The crash generated in the preceding section with Notmyfault’s High IRQL Fault (Kernelmode) option poses no challenge for the debugger’s automated analysis. Unfortunately, most crashes are not so easy and sometimes are impossible to debug. There are several levels of increasing severity in terms of system performance degradation that might help turn system crashes that cannot be analyzed into ones that can be. If the crashes generated after you configure a level and reboot aren’t revealing the cause, try the next level.
1. If there are one or more drivers you consider likely sources of the crashes—because they were introduced into the system relatively recently, they were recently updated, or the circumstances of the crash implicate them—enable them for verification using the Driver Verifier and check all the verification options except for low resources simulation.
2. Enable the same level of verification as in level 1 on all unsigned drivers in the system.
3. Enable the same verification as in level 1 on all drivers in the system. To maintain reasonable performance, you may want to divide the drivers into groups, enabling the Driver Verifier on one group at a time between reboots
Obviously, before you spend time and energy making system configuration changes and analyzing crashes, you should ensure that your system’s kernel and drivers are the most recent available by using the services of Windows Update and third-party driver support sites.
If your system becomes unbootable because the Driver Verifier detects a driver error and crashes the system, then start in safe mode (where verification is disabled), run the Driver Verifier, and delete verification settings.
Source of Information : Microsoft Press Windows Internals 5th Edition
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