The issueis described here on HP forums, and so far nothing works. I'd highly appreciate if someone have any idea how to fix this issue without having to resort to re-partitioining/reformating/re-installation from scratch. Here is the brief description: I am getting the following error when I turn on my notebook or reboot it (and it happens randomly): \Boot\BCD Status: 0xc0000225 An error occurred while reading boot configuration data. This started happening since last 3/4 weeks, and only thing which I did during the period in question was to upgrade BIOS to F.1A version from F.13. Apart from the information in that thread, I've also tried TestDisk and Minitools Partition Wizard, and they both can't see the existing partitions. MPW do see a 'Dynamic Disk' with all the capacity of my HDD. However, windows own Disk Management tool sees all the partitions and it say they are healthy. I have also run the short/long test for HDD provided by HP and it didn't find any issue with the HDD. Thank you in advance and let me know if any further information is needed.