I'm troubleshooting a friends computer.
It is a Sony VAIO duo, Model # SVD11213CXB. It is saying "Operating System not found".
I have tried doing a refresh, restore, changing the UEFI to Legacy, and back. It keep coming back to Operating System not found.
It has Window 8.1 on it.
I'm having a hard time getting it back to the UEFI mode also even after I change it back.
When it finally goes back to UEFI mode, I have the option to take to do a DOS prompt.
When I do, I see the OS is on the X: drive and not the C: drive.
Before the OS not found, it was saying cannot boot to drive, drive is locked.
I ran the check disk and after it finished it said Operating System not found.
Has anyone came across this and what did you do to get it go boot to the OS.