Razer Lachesis Cursor Jumping, What to Do

This might seem like an obscure problem, but it has happened to a few people that I know of.  The cursor, presumably of its own accord, jumps either left or right.  Fortunately, it does not happen as much while it is activated, but when it does, it can be infuriating.  If you are in the midst of editing a long document or working in an Adobe Illustrator file or Photoshop Image, it can really sour your mood.  Don't get me wrong, I love the mouse, but when I noticed that this started happening; I felt that action must be taken.

First, I wanted to identify the source of the error.  It did not happen from the beginning, so there was a big clue.  Also, I had not installed any new software for some time.  Number one suspect, one of the Windows Vista x64 Updates.  I have heard of this happening in Vista 32, but as of yet have not heard reports of Windows XP being problematic.

Next, I decided to search for a solution.  There was nothing on the Razer support section for some time and indeed no solutions popped up for sometime until one day, Razer addressed the issue with a Beta Firmware update.  Instructions for how to get the beta update are in the Razer support section.  I installed the Beta firmware and two things happened:

  1. Mouse died (temporarily)
  2. Beta update failed (until reboot)


A reboot fixed things, but n00bs beware, there are a couple of things that you should know before you start.  If you do not know how to reboot from your keyboard, then this will be a valuable lesson.

Hit either CTRL+ALT+DEL and navigate through the buttons with the arrow keys until you get to either shutdown or reset.  Or my preferred method, which is to manually shutdown all programs with ALT+F4.  This is nice, because Windows Vista is not always so kind as to save your open documents for you.  Once you have shutdown all of your open programs, hitting ALT+F4 will allow you to close windows.  Remember without a mouse, you can use arrow keys and tabs to navigate between the buttons, ENTER has the same effect as a left mouse click.

This article is now Irrelevant

This article is now irrelevant as the official driver update has been released. Installation is much more user friendly.

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