Mouse highlights everything

HI all,

Need some help here. I got a problem with my mouse tracker/pointer.

1st scenario:
When I pointed my mouse pointer to one of the icon from the desktop it will highlight all icons which goes up and down very fast and continously.

2nd scenario:
When I click on start, pointed mouse on the top portion it will highlighted everything, up and down and I wasn't able to control the mouse.

Here are the steps I have made to figure out the solution:
disconnected mouse - problem persist
changed the keyboard - problem persist
created another account - problem persist
checked mouse settings - problem persist
updated bios to its latest version - problem persist
reformat OS to its default factory settings - problem persist

Note that this problem happens intermittently. I thought that after reformatting the OS and use the machine for about 6hrs it would solved the problem. But then problem persist again. Any idea would be a great help. Thanks.


Model: Lenovo X61T
OS: Windows Vista

Lenovo X61T is a laptop. Are you referring to the touchpad on the laptop or a connected mouse?

If it is a separate mouse, need make and model number.

If it is touchpad:
Control Panel> Mouse> Touchpad> UNCHECK tapping> decrease Sensitivity> Pointer Options tab> change speed to middle between Fast and Slow> Gestures tab> set NONE in all 4 corners.

See if that improves the highlighting.