help my mouse worked until two days ago now it just wont do anything its frozen in space when i try to do anything i run a computer with windows vista !!!!
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What is your mouse ? Check if it needs any drivers and download them.
Try another mouse?
If it's a USB mouse try unplugging it and wait a few seconds before plugging it back in. Does Vista detect that the mouse has been removed and plugged backed in? If not then try plugging it into a different USB port.