seeing an uptick in No boot Device and hard drive wiped clean

Occasionally a computer has either error: no boot device or no boot disk and the hard drive is wiped clean. A hardware test finds nothing wrong and we reformat and reinstall the operating system again with SCCM. The computers had either FortiClient 6.0.0 or 6.0.5 - Anyone else see an uptick in 'no boot device' or 'no boot disk' and the hard drive wiped clean? Thanks!