Question: hdd is locked how to unlock?
Answer: Step 1: Run a disk check. Install the boot disk or USB drive, and power the computer on. ... 
Step 2: Run a system file check. Boot the computer from the disk or USB as you did in step one. ... 
Step 3: Complete a startup repair. ... 
Step 4: Try a system restore. ... 
Step 5: Refresh your PC.