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Posted
Yesterday had an issue with a couple of PC's where the mouse had a mind of its own, it was just moving randomly all over the screen, not able to select anythiong as it would not stay still longenough. Cleared it with a couple of reboots and all was fine. Though that was isolated till today in a totally separate school I have had another PC with the same issue! Changed the mouse and it is fine. Now is that coincidence or something more sinister? But the same totally random movement symptems in two separate schools? Least its Friday!
Posted
Does the mouse still do it if you hold it up in the air off the worksurface so its optical sensor isn't able to scan anything?
Posted
I've had this a couple of times when the mouse was starting to pack up. Replaced the mouse and the issue vanished. Tried the faulty mouse on other machines and the pointer has a mind of its own again.
Posted
This can be shorting cables thanks to computers etc being dumped on top of them or it can be junk in the optical sensor. Happened a lot more with ps2 mice due to the shorting issue.

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