In our continuing investigation in to the restart issues related to MS10-015 that a limited number of customers are experiencing, we have determined that malware on the system can cause the behavior. We are not yet ruling out other potential causes at this time and are still investigating. Please review our blog post from yesterday for additional information.
One of the key components when investigating issues like this are obtaining memory dumps from computers experiencing the problem. In order to get the information we need to fully analyze the issue, some of our support engineers have actually driven to customer locations and picked up affected systems so we can get the needed crash data directly and help inform our investigation. For more information about memory dumps, please see: http://support.microsoft.com/kb/254649.
We encourage customers to follow our “Protect Your PC” best practices and always have up to date anti-virus software running on their systems to help prevent malware infections. For customers who do not have anti-virus software, you can either scan your system using our online tool at http://safety.live.com or you can install Microsoft Security Essentials for free.
This can be a difficult issue to solve once a computer is in an un-bootable state so we encourage customers who feel they have been impacted by this to contact our Customer Service and Support group by either going to https://consumersecuritysupport.microsoft.com or by calling 1-866-PCSafety (1-866-727-2338). International customers can find local support contact numbers here: http://support.microsoft.com/common/international.aspx.
The Microsoft Security Response Center (MSRC) Update - Restart Issues After Installing MS10-015