Malware Defense: Computer Crashes When Opening Safe Mode
Malware Defense is a so-called "security tool" that is, in fact, malware. The software installs itself without your permission and reports nonexistent viruses in an attempt to get you to purchase the program. In addition to redirecting your browser, it generates pop-ups and blocks access to legitimate security software. In most cases, Windows' Safe Mode is helpful in removing this type of malware. Safe Mode can crash as a result of the infection; your only option may be to remove the program manually.
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System Restore
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An effective way to remove malware is by running System Restore. This is due to the fact that viruses are not easy to remove and some return after you restart your computer. Even after the removal, system files can be damaged to the point of no return. Search for "System Restore" in the Start menu and select a restore point. Pick a date prior to the date Malware Defense first appeared.
Multiple Infections
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Just because Malware Defense has taken over doesn't necessarily mean it is the source of the crash. You may have more than one virus, some of which could have been installed after the browser hijack. Before you resort to manual removal, scan the hard drive multiple times with more than one anti-virus program. Also, scan it with an anti-spyware program to detect the presence of spyware.
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Manual Removal
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Manual removal should be used as a last resort because it involves tampering with the registry, which can render your system useless. You'll need to stop the processes related to Malware Defense and de-register its DLL libraries. After you delete the installation folder found in Program Files, all that's left is to delete the the registry entries that point to the software. See the first Reference for more information.
Considerations
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Crashes aren't always caused by software. In fact, Safe Mode disables third-party programs and services, making this type of crash unlikely. Faulty RAM will wreak havoc on your computer whether it's in safe mode or not. Test each stick one at a time using the Windows Memory Diagnostic tool. You can locate the scanner through the Start menu's search box.
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