[Users] BSOD's on Server 2008 Guests

Hi guys, I have 3 Server 2008 guests running on my oVirt 3.1 system, if there is an incorrect shutdown(power failure) of the entire system and guests, or even sometimes a normal reboot of the guests, the 2008 Servers all start with blue screens and I have to reboot them multiple times before they eventually boot into Windows as if nothing was ever wrong. The Linux guests all behave perfectly on the system so I highly doubt there are any hardware issues. Does this problem sound familiar to anyone? I don't want to go ahead and run all the latest updates and possibly risk bigger issues, unless there is a good reason to. These are the details of my system. Centos 6.3 64bit on nodes and engine using dreyou repo. ovirt-engine-3.1.0-3.8.el6.noarch vdsm-4.10.0-0.44.14.el6.x86_64 qemu-kvm-0.12.1.2-2.295.el6_3.2.x86_64 libvirt-0.9.10-21.el6_3.5.x86_64 2x Dell R720 with Xeon E5-2620 CPU's Nodes running the guests. An FC SAN for storage HP Micro Server for the engine Please shout if any other details will help. Thanks. Regards. Neil Wilson.