I installed Ubuntu 13.04 on an unassigned partition, but Windows 7 cannot reboot after choosing it, saying Windows Boot Manager error.
Windows Boot Manager
Windows failed to start. A recent hardware or software change might be the cause. To fix the problem: 1. Insert your Windows installation disc and restart your computer. 2. Choose your language settings, and then click "Next." 3. Click "repair your computer." If you don't have this disc, contact your system administrator or computer manufacturer for assistance. File: \boot\bcd Status: 0xc000000f Info: An error occurred while attempting to read the boot configuration data.
When I tried to repair I cannot find Windows disk. Then I went to reinstall, cannot find the partitions at all. I checked in Ubuntu, the filesystem type for C:drive is NTFS.
What should I do to get my Windows back?