Mouse Hanging

I assume your using a USB mouse. Try looking at the mouse properties via control panel, system, hardware, device manager. If there is a yellow flag on mice and other pointing devices, you have a problem. Expand Mice and other pointing devices, rightclick on mouse. The properties dialog box will come up and show if you have problems. you can reinstall drivers by clicking on the driver tab, then clicking on the update driver tab at the bottom of the property sheet. Also check the USB port properties via the device manager. You don't mention what motherboard your using. MSI had a USB port problem (bug in the chipset) that caused the USB ports to stop working. The only fix was to install a PCI USB card.

If you are using a USB mouse add the adapter that probably came with it and put it in the PS2 port. If it is a PS2/USB mouse put it in a USB port.

This type of behavior is usually caused by hardware failure. Could be heat related. When the mouse freezes, can you toggle the NumLock button on or off? If not, it's definitely hardware related as the NumLock key does not use windows to turn itself on or off. Make sure your fans are spinning good and blow the dust out of your computer every few months with canned air.

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