I have a ThinkPad T400. No operating system is currently installed on it, but if I want to install one, or boot a LiveCD / Stick, the laptop clicks by itself every half a second. Even if you plug in the mouse, deactivate the touchpad, restart, delete the operating system, etc. It is also not due to the hard drive, since I have already replaced it and still has the same problem. What is the problem and above all: how can I solve it?
If your laptop types on its own, it's probably because of the built-in keyboard. Especially with laptops it can hang and write by itself after a long typing or it is simply broken.
Is the mouse pad broken?
Maybe a virus
No, that's also with the mouse pad deactivated.
