Overall investigation summary: fse had initially gone on site (d11673) to investigate an error 0017 on the generator, troubleshot and found no cathode continuity in the x-ray tube.Fse replaced the x ray tube then had the pc tower crash.Fse replaced the hard drive but the issue remained.The pc was returned to varex for warranty repair.Varex reported that after the hard drive replacement the boot order had changed.Varex corrected the boot order and the computer functioned normally.Fse returned to site after computer was returned from varex, installed the pc and completed the spellman/nexus update (d11621).Verified operation according to service checklist qssrwi 4.5.The system was fully functional and returned to service.A review of cts shows no similar issues reported on this unit.Root.Impact assessment summary: na.Root / probable cause code: equipment/instrument - failure.Root / probable cause summary.Refer to investigation summary.No further investigation needed at this time.Qa will continue to monitor and trend for similar issues.No capa at this time, these trends and issues are reported on during quality metrics review and during the management review meetings to consider input for corrective action.Complaint confirmed: yes.Disposition summary: unit returned to service.
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