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My notebook keyboard is repeating key events in Windows, every 2 seconds I get these 2 events:

KeyDown (LButton OemClear 255)

KeyUp (LButton OemClear 255)

The pair of events keep firing and repeating endlessly.

I've already replaced the notebook keyboard twice, but it didn't solve the problem :(

Any idea of what kind of problem is this?

Should I format my computer to see if it's software related? I use Windows 7 Home Premium 32b.

Or it's guaranteed to be a hardware problem? What do you think?

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LButton is the left mouse button in Autohotkey code; therefore a first step could be to use a different mouse and see whether this solves the problem. It could also be that somehow buttons from a joystick or keypad presses are registered as LButton somehow. Incidentally, what happens when these events get registered? What do you see? I am assuming this is obstructing your use of the computer in some way; but how?

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it’s a notebook. Of course it’s obstructive, if the system thinks that the LMB is constantly being clicked. @LD2008, do you have an external mouse? If not, try plugging one in. – Synetech Feb 21 '11 at 2:35
@Synetechinc.: It could be that the OP is using some AHK script that sends mouse clicks to an invisible or non-existing control (these would be visible in a log). There are various ways in which it might not be obstructive (I could easily write a script that does that); I was trying to establish whether he experienced mouse clicks, or some other weird behaviour. Moreover, since I do not know how he is registering these key presses, nor why he even added the AHK tag, the OS might be registering something that isn't a mouse click at all. In short, we need more info. – Cerberus Feb 21 '11 at 3:09
@Synetechinc.: And I have already suggested that he try a (different) mouse. – Cerberus Feb 21 '11 at 3:10
I didn’t suggest a different mouse, I suggested an external mouse at all—as opposed to the built-in trackpad. ;) – Synetech Feb 21 '11 at 3:15
@Synetechinc.: OK, I assumed that he'd try any mouse at all then, in case he hadn't been using a mouse. – Cerberus Feb 21 '11 at 3:18

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