First of all, restart your computer and see if the issue is fixed or not. If the problem was occurring due to a minor glitch, it will be fixed automatically after restarting your computer. Also, ...

If you use a wireless mouse, its batteries might be low. Replace the batteries and check if this helps. If this does not work, you can use a wired mouse. The driver of your gaming mouse might have ...

I have a cheap Logitech laser mouse (not wireless) I bought at Wal-Mart. It works fine in normal use, but the cursor turns invisible in games. Most recently in Dragon Age. You can sort of use it in ...