So, you are getting an error message while trying to boot your Windows Operating System (OS) based computer? Or some error message is restricting your PC from booting? Well, this behavior occurs when Master Boot Record (MBR) or its related components are corrupt! MBR is the first sector of hard disk that consists of all key information responsible for successful booting of your computer. MBR starts the boot process by looking at the partition table (stored in MBR itself) to determine the bootable partition (or primary/active partition) and then tries to boot from it. Hence, your system does not boot as well as starts throwing various error messages, if any of these components: MBR, partition table, or bootable partition is corrupt. In such situation opting for reliable third-party data recovery software can drag you out of the devastating situation of data loss.
Let us see some common error messages which restrict our Windows operating system based computer from successful booting:
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Error: Non-System Disk or Disk Error/ Missing Operating System: We encounter this error message when none of the system files which are needed to load the operating system are found though there is active partition present in the system. This issue also occurs when a non-system partition is marked as active by FDISK or the entry of the system partition is removed from the partition table.
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Error: NTLDR is missing / Disk Read Error: problem again is caused when the system files needed for the loading of operating system are missing. In such situation, the MBR successfully finds the boot sector and active partition in the partition table but due to the unavailability of system files, we encounter this issue.
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Error: Operating System not found: error message is encountered when MBR does not find any active partition or MBR does not find boot sector on active partition. In such situation MBR fails to pass the control and thus the booting process halts.
Though there are measures provided by Microsoft to rectify these error messages but at times these recommended measures too fail to do needful. In such situation formatting of the operating system remains the only way to work around the issue. Since, formatting deletes entire data saved on the primary partition and hence to recover the formatted data you can either use updated backup or data recovery. These data recovery tools recover lost, deleted, formatted, or inaccessible data from Windows OS based computers.
One of the awards winning and highly recommended software for this category is Stellar Phoenix Windows Data Recovery . The software recovers lost/deleted/formatted data from Windows based hard disk drives and other storage media. The software is compatible with Windows 7, Vista, Server2003, XP, 2000, and NT4 (SP6).