If by "breaked apart" and "Intel Storage Utility", you refer to a failed drive and Intel(R) Rapid Storage Technology enterprise [Intel(R) RSTe], since it is a RAID 0 array, there is no rebuilding taking place because "no redundancy information is stored in a RAID 0 volume" (qtd. here). If your Operating System, therefore, was on this RAID volume in question, I confirm it will not boot right back. "When a RAID 0 volume fails or is disconnected, the data on the hard drive is no longer accessible" (qtd. here). For more details, you can find the Intel® RST User Guide at the following URL:
Sorry I made a mistake, I was talkink adout Raid1, not Raid0.
What is the model of the system board you are using?
You can always start the rebuild process within the RAID BIOS (CTRL+I) but the rebuild takes places when the service is started at the Operating System level.
Were you able to access your Operating System before you started the rebuild?