Ensure your IDB size is ok and no errors...do health check...then ensure all the components installed together with CM have all latest patches applied....upgrade as follow for best results..
5.5 (latest patches)
6.10(latest patches)
6.11(latest patches)
6.20(latest patches)
6.21(latest patches)
7.0(latest patches)
7.01(latest patches)
8.0(latest patches)
also make sure your MSL FW/drivers compatible with win2k8r2...upgrade all to latest level..
hope that helps
