Thanks for reply Sir .I read manual and check all thing in board and fixes all issue removs all devices but not fix issue without hdd working perfectly.but I connect power wire in hdd or and DVD no sata wire only power wire .and problem show me .I uploaded my PC issue video here plz check Andy Sir.i update already new bios this Version: 3.61 Rev.A Release date:Mar 6, 2018.my board Rev: 003
https://support.hp.com/us-en/drivers/selfservice/swdetails/hp-z800-workstation/3718645/swItemId/wk-207280-1
https://vimeo.com/346544447
https://support.hp.com/us-en/drivers/selfservice/swdetails/hp-z800-workstation/3718645/swItemId/wk-207280-1
https://vimeo.com/346544447