Improper version of Keyboard Driver in Device Manager.Ctrl Button is ON inside the sticky buttons.The following can be one of the reasons for the nuisance of the ctrl key is stuck. 3.3 How can I fix manually Ctrl key is stuck.3.2 What is the Ctrl key, and where is it used?.3.1 How many Ctrl keys are present on a computer keyboard?.2.10 Fixed Photoshop causing ctrl key stuck:.2.8 The Ctrl key is stuck physically into the computer keyboard:.2.7 The Contol Key is stuck ON while using the virtual box:.