This article contains information about the 'Error inspecting BIOS' network status code.
'Error inspecting BIOS' is one of the possible status values that a machine can have after running a machine audit or a network scan. However, it is highly unlikely that you would ever see this message. It basically indicates that, which auditing a machine, ENT was able to connect to the the WMI service on that machine and authenticate properly, and the machine audit was started, but while collecting information about the BIOS on the remote machine, an unknown error was encountered.
Typically, such an error would be completely random and the easiest way to deal with it would be simply to audit the machine again.