?There are many ways by which logical corruption in Windows Vista can occur. In most cases, the operating system becomes un bootable, leading to inaccessibility of data saved in your hard drive. Understanding the critical of your data, Microsoft has embedded a powerful feature in Windows operating system, 'Startup Repair', to overcome all kinds of Windows booting and data inaccessibility problems. This feature can be accessed from 'System Recovery Options' or can also be installed on your hard drive. While the feature is useful in repairing most of the file system corruption problems, there is a possibility that it fails to repair your operating system and the data saved in your hard drive remains inaccessible. In such cases, if you want to access your hard drive data, then you need to restore the files using an updated data backup. But, with inaccessibility of an updated backup, you need to use an advanced disk recovery application. Consider a practical case, where you encounter the below error message while trying to boot your Windows Vista based system: "no bootable devices, please insert boot cd and press any key" To overcome the message, when you run Startup Repair, you encounter another error message stating that your system can not be repaired using this feature: "Problem Event: Startup RepairV2 Problem Signature 01: External Media Problem Signature 02: 6.0.6000.163220.127.116.11.0 Problem Signature 03: 0 Problem Signature 04: 65537 Problem Signature 05: Unknown Problem Signature 06: Bad Disk Problem Signature 07: 0 Problem Signature 08: 0 Problem Signature 09: Unknown Problem Signature 10: 1168 OS Version: 6.0.6000.2.0.0.256.1 Locale ID: 1033" After the above error message pops up, your hard drive data becomes inaccessible. Resolution: In case the Startup Repair option fails to repair, the next best option is to reinstall Windows Vista operating system. Though this option allows you to boot your system, it also deletes the data saved on your Windows Vista based hard drive. To access the deleted data post formatting, you need to search for a third-party disk recovery utility. Such hard disk recovery use powerful techniques to recover formatted data and to restore it at required location. Stellar Phoenix Windows Data Recovery supports complete formatted data recovery from FAT12, FAT16, FAT32, VFAT , NTFS and NTFS5 file system based partitions. The disk recovery software can be installed on Windows 7, Vista, XP, 2003, and 2000. It supports recovery from all kinds of storage media, including memory cards, digital cameras, etc.