Left mouse button has stopped working !

  Paul33 18:31 PM 23 Oct 12
Locked

The left mouse button on my son'r desktop has bizarely stopped working. Right button is fine and the mose works fine in every other response except the left click which does nothing.

I have tried two other mouses (mice !) from around the house and all of them have no left click so it seems to be a software problem somewhere.

I went into Control Panel and reversed the left/right click functionality and now the right button DOES work perfectly as the left button should but I don't really want to leave it that way.

All are optical devices and the only change he has made recently is replacing his keyboard which had suddenly died.

Any ideas ?

  difarn 22:07 PM 23 Oct 12

Some things to try:-

Go into mouse properties - is click lock checked? If so, uncheck it. If not check it to see what happens.

Check in Device Manager to see that there are not two conflicting mouse drivers installed for some reason.

Update mouse driver.

Take the batteries out of the mouse for a while and then replace them.

  D@ve 19:02 PM 25 Oct 12

Are you using PS/2 or USB mice? I'm wondering if perhaps the socket on the motherboard has somehow been damaged. If PS/2, have you checked you haven't got the keyboard plugged in the wrong sockets? (Not sure what effect it would have if you did).

Other things I can suggest:

Try booting from a CD / DVD. If you have a Windows 7 disk use that. If not, download and make a Linux Live disc. If the mouse works when booting from disk then you can be certain it's a software fault. If it doesn't then you know there's a hardware fault somewhere (probably the motherboard).

If you determine it's software, maybe you could try uninstalling the mouse driver using Device Manager. I'd expect it to automatically reinstall upon reboot, but it's not something I've ever had a need to do before so I'm not 100% sure.

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