• Please uninstall "Razer Synapse" and "Razer Chroma SDK Core Components" from your computer under Programs and Features.
  
  
• Delete all files in C:\\Program Files (x86)\\Razer\\Synapse and C:\\ProgramData\\Razer\\Synapse directories. These folders are hidden by default, so please be sure to unhide them by accessing "Folder Options", then, go to the "View" tab and select "Show hidden files, folders, and drives." (NOTE: If you are somehow unable to delete these folders, you may have to kill any Razer Synapse related processes running in your task manager.)
  
  
• To ensure that there are no residual files remaining that may corrupt the installation, restart your computer.
  
  
• Go into device manager, go to Keyboards and Audio inputs and outputs - mouse and other pointing devices, uninstall all Razer product drivers, and restart your PC. Be sure to select delete drivers as well when uninstalling.
  
  
• Restart your computer again.
  
  
• Temporarily turn off all Firewall and Antivirus software to prevent any conflicts.
  
  
• Make sure you have the latest version of Microsoft .NET Framework (4.5 or higher) You may download them at http://www.microsoft.com/en-us/download/details.aspx?id=30653.
  
  
• Download and Run the executable file from this link: http://rzr.to/synapse-3-pc-download.
  
  
• Once installed please launch Razer Synapse as Administrator.
  
  
• Once Synapse has been installed successfully, you may turn your firewall and antivirus services back on.
  
  
• Do another test and check if the issue has been fixed.
  
  

Razer.Lauriat
Hey! Let's see if clean reinstallation of Synapse can help. Please follow these steps:

• Please uninstall "Razer Synapse" and "Razer Chroma SDK Core Components" from your computer under Programs and Features.
  
  
• Delete all files in C:\\Program Files (x86)\\Razer\\Synapse and C:\\ProgramData\\Razer\\Synapse directories. These folders are hidden by default, so please be sure to unhide them by accessing "Folder Options", then, go to the "View" tab and select "Show hidden files, folders, and drives." (NOTE: If you are somehow unable to delete these folders, you may have to kill any Razer Synapse related processes running in your task manager.)
  
  
• To ensure that there are no residual files remaining that may corrupt the installation, restart your computer.
  
  
• Go into device manager, go to Keyboards and Audio inputs and outputs - mouse and other pointing devices, uninstall all Razer product drivers, and restart your PC. Be sure to select delete drivers as well when uninstalling.
  
  
• Restart your computer again.
  
  
• Temporarily turn off all Firewall and Antivirus software to prevent any conflicts.
  
  
• Make sure you have the latest version of Microsoft .NET Framework (4.5 or higher) You may download them at http://www.microsoft.com/en-us/download/details.aspx?id=30653.
  
  
• Download and Run the executable file from this link: http://rzr.to/synapse-3-pc-download.
  
  
• Once installed please launch Razer Synapse as Administrator.
  
  
• Once Synapse has been installed successfully, you may turn your firewall and antivirus services back on.
  
  
• Do another test and check if the issue has been fixed.