If you find your mouse pointer behaving erratically, for example jumping around on the screen, then it's possible that the registry settings for your mouse device have become corrupted. A quick way of troubleshooting this issue is to do the following:
1. Open Registry Editor
2. Find the key HKCU\Control Panel\Mouse
3. Delete this key
4. Log off Windows and log on again
When you log back on, Windows will automatically re-create this registry key and hopefully your problem will be resolved. Please remember that before you make any changes to your registry, back it up!
Mitch Tulloch is President of MTIT Enterprises, an IT content development company based in Winnipeg, Canada. Prior to starting his own company in 1998, Mitch worked as a Microsoft Certified Trainer (MCT) for Productivity Point International. Mitch is a widely recognized expert on Windows administration, networking and security and has written 14 books and over a hundred articles on various topics. He has been repeatedly awarded Most Valuable Professional (MVP) status by Microsoft for his outstanding contributions in supporting users who deploy Microsoft platforms, products and solutions. Mitch is also a professor at Jones International University (JIU) where he teaches graduate-level courses in Information Security Management (ISM) for their Masters of Business Administration (MBA) program. For more information see http://www.mtit.com.