Why is Server 2012R2 rebooting with Kernel Security Check Failure?

I have a brand new HP ML310e Gen8 V2 server running Windows Server 2012R2.  It has been happily running for about 4 weeks now, until yesterday.  It will reboot after giving the KERNEL_SECURITY_CHECK_FAILURE screen.  The log file entry is as follows;
Windows bug check  STOP: 0x00000139 (0x0000000000000003  0xFFFFD001EB8FD2B0  0xFFFFD001EB8FD208  0x0000000000000000)

I have been able to uninstall all recent MIcrosoft updates and also update all firmware and drivers from HP.  I have also uninstalled anti-virus, but the problem persists.  Upon a reboot I am able to login,  and after about 10 minutes it reboots again.  There has been no hardware changes, and no software installations.  Any help would be appreciated.
dn_auAsked:
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dn_auConnect With a Mentor Author Commented:
This problem was resolved by deleting and then re-creating the virtual switch.  Thanks for your suggestions.
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VB ITSSpecialist ConsultantCommented:
Try installing the KB2919355 cumulative update as it contains a fix for a similar problem when you have Avast installed, as outlined in this KB article: http://support.microsoft.com/kb/2929749
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dn_auAuthor Commented:
Thanks for your suggestion, but this update is already installed.  Also we are not running Avast, but running Trend MIcro Worry Free Business Security Professional 9 SP1.  This has also been uninstalled but the problem persists.
I can boot into safe mode with networking and the server will sit there all day without a problem, so I am leaning towards it being a driver or service issue.
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VB ITSSpecialist ConsultantCommented:
What RAID controller do you have in your server? Another person had a similar problem with the same model of server as yours and 2012 R2. The fix was to change the controller to run in SATA AHCI mode as opposed to RAID mode, which resolved his issues. See here for more information: https://social.technet.microsoft.com/Forums/en-US/53bb0ac6-39ad-435f-b6ce-e39b3eb6e4b6/server-2012-r2-keeps-crashing?forum=windowsserverpreview
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dn_auAuthor Commented:
Because this is what fixed the issue.
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