Every time I turn on my computer the password box is already full (deleting 40 characters), this also happens sometimes with search boxes on Windows 8.
The laptop I am using is only 3 days old.
I think it is the '-' button but the actual button doesn't seem to be stuck at all and when used casually I have no problems. Nor with any other button I've used.
I have noticed some buttons fail to register that I have pressed them occasionally (especially the space bar) but I guess that is maybe user error.
I have had this issue since the first time I turned the computer on.
Any ideas what is causing the problem?