Wormhole connection failed

Please try the following:

• Make sure that the Asgard or NID have not taken again the Stargate, please check the security videos for any bright light that may have suddenly appeared as the Stargate got lost.
• Contact the Tok'ra or the Asgard and ask what's going on. Instead you can press the Big Red Button button at your DHD, or dial again later.
  
• If you dialed the page address in the DHD, check the Stargate Symbols again and make sure that you dialed the right address.
  
• To check your wormhole connection settings, ignore Brigadier General O'Neill's questions why the hell this Stargate does not work and locate Lieutenant Colonel Carter. Ask not Dr. Felger! He may just make everything worse! If you find Major Carter ask her to examine the DHD control. Then let her run a Computer Diagnostic Program, if she finds an error in the system caused by an alien infection let her repair the Dialing System and ckeck it then again. The settings should match those provided by your local intergate network (LIGN) or Ancient Gate provider (AGP).
• If your Ancient mechatronicer has enabled it, DHD Diagnostics can examine your gate network and automatically discover gate network connection settings.
  If you would like Dr. McKay help Major Carter to try and discover them,
  click McKay's Diagnostic Program
• Some planets require 8 Chevron connections. Open the Ancient Dialing E-book and then click About Stargates to determine what number of chevrons you require.
• If you want to let your allies know that the dialed Stargate is unavailable, send them a coded message.
• Click the Disengage button to try another planet or use the Mirror to travel to an alternate universe.