A couple of users reported an issue with HP's latetest ESXi Oflline Bundle (v1.4). Please take a look at e.g. http://h30499.www3.hp.com/t5/ProLiant-Servers-ML-DL-SL/ESXi-5-0-Hardware-Status-shown-as-Warning-but-no-all-Disks-and/m-p/5974573/highlight/false whether this is the same issue you experience.
André
Message was edited by: a.p.