According to your error message "Your drive is locked, unlock it"; you have a Hard Disk Drive password issue. I suggest you to power the system off.
Then, open the chassis and remove the BIOS configuration jumper, turn the system on and select the option Clear BIOS User and Supervisor Passwords. It is necessary to erase the Hard Disk Drive password.
I have seen this same issue before as well and jumper reset didn't clear off the password. Wound up lifting a leg on the CMOS battery and draining off the charge at the chip to gnd. Reconnecting it and refire the system. This will clear out all you CMOS settings however any passwords that may have been set will be cleared off the mobo side. If the pw was written to the HD it's permanent toast..