Had an Vista PC brought in to me today, with a scareware remote story. The computer is LOCKED (Pictures attached). Drive was pulled and no virus/malware/rootkit found. Ctrl+Alt+Del allows me to open task manager, but I cannot actually do anything with hit. The mouse is constrained to the middle of the screen away form Task Mgr, and keyboard input closes everything immediately and then reopens the locked password request. No actual Ransomware is found on the computer asking for money or providing a phone number or e-mail. No change when logging into Safe Mode of any flavor. Replacing registry from regback didn't solve it.