0xc0000001 error help

[aluthrenite]

Whenever I boot my computer, an Asus S550CA, I get a blue screen with the following error: After multiple tries, the operating system on your PC failed to start, so it needs to be repaired.
Error code: 0xc0000001

When I tried to "Refresh" the system, I got the following message: The drive where windows is installed is locked. Unlock the drive and try again.

I cannot boot windows in Safe Mode and I do not have any recovery media or a backup of the system.

After reading the information provided here: http://answers.microsoft.com/en-us/windows/forum/windows8_1-system/unable-to-boot-error-code-0xc0000001-youll-need-to/520d5a3f-1fbb-4a9a-98d1-03a8201f00ed

I entered the following commands in the command prompt accessed via Troubleshoot->Advanced options:
Bootrec /fixmbr
Bootrec /fixboot
Bootrec /scanos
Bootrec /rebuildbcd

There first two commands returned the following message: The operation completed successfully.

The last two commands returned the following message: Successfully scanned Windows installations. Total identified Windows installations:0 The operation completed successfully.

When typing the commands in the command prompt, I noticed that the path was: X:\windows\system32\cmd.exe

Correct me if I am wrong, but shouldn't I be in the C: drive rather than the X: drive?

I do not know what I should do next. I would appreciate any suggestions that could help fix this issue (preferably in a manner which will not delete my personal files). If further information is required, feel free to ask.

Thank you for your time.

 

[Chicano]

Looks like running the Bootrec /scanos and Bootrec /rebuildbcd caused the "Windows Installation:0 and detecting the OS on drive X: which stands for unknown letter.

The first two commands had worked but executing the next two resulted in the problem. The Bootrec /rebuildbcd command is used to add a second OS for dual boot and also to completely repair the bootloader but typing boot drive letters is required.

Suggestions:
1. Repeat the bootloader repair but use the automatic Startup Repair instead.
2. or use the first two commands... and if nothing works,
3. use the third and fourth command to completely rebuild the bootloader.