My DS won't connect online it says it has an error 51300

With an online-capable game insertedinto your Nintendo DS, turn on your system and access the game's main menu. Access the Nintendo Wi-Fi Connection settings.(These settings are typically found by selecting "Nintendo WFC" fromthe game's main menu. For detailed directions, consult the manual for thegame.) At the Setup screen, tap"Nintendo Wi-Fi Connection Settings." Tap "Connection 1 None." Clickon "Search for an Access Point." TheNintendo DS will search for any wireless networks within range. Once it isfinished searching, it will display the names of all the wireless networks itfinds. Look for your wireless network. What to do next will depend on the"lock" icon you see next to your network on the Nintendo DS. If thelock icon that appears is unlocked and blue, Select "OK," "SaveSettings," and then "Yes." The Nintendo DS will run a connectiontest with your wireless router. The connection test was successful - YourNintendo DS is now connected online and you can enjoy the Nintendo Wi-FiConnection features of the game! The connection test was not successful - Ifthe test was not successful, you will receive an error code. Error Code 51300: This means the security codeor network name entered into the Nintendo DS is not the same one the router isset to. To reach your connection settings, click "back" on the errorcode screen. Make sure to pay extra attention to the security key you find inyour router's settings and enter it exactly as it appears (the key is casesensitive). For all other error codes, go to the Nintendo website or contactcustomer support. If the lock icon is locked and red, Enter your router's WEP keyinto the Nintendo DS Select"OK," "Save Settings," and then "Yes." TheNintendo DS will run a connection test with your wireless router. Theconnection test was successful - Your Nintendo DS is now connected online andyou can enjoy the Nintendo Wi-Fi Connection features of the game! Theconnection test was not successful - If the test was not successful, you willreceive an error code. If the lock icon is locked and grey, and you wouldstill like to connect your Nintendo DS online, you will need to either changeyour router's security to WEP, or disable security entirely. Please note thatany changes you make will affect other devices that connect wirelessly to yourrouter.

With an online-capable game insertedinto your Nintendo DS, turn on your system and access the game's main menu. Access the Nintendo Wi-Fi Connection settings.(These settings are typically found by selecting "Nintendo WFC" fromthe game's main menu. For detailed directions, consult the manual for thegame.) At the Setup screen, tap"Nintendo Wi-Fi Connection Settings." Tap "Connection 1 None." Clickon "Search for an Access Point." TheNintendo DS will search for any wireless networks within range. Once it isfinished searching, it will display the names of all the wireless networks itfinds. Look for your wireless network. What to do next will depend on the"lock" icon you see next to your network on the Nintendo DS. If thelock icon that appears is unlocked and blue, Select "OK," "SaveSettings," and then "Yes." The Nintendo DS will run a connectiontest with your wireless router. The connection test was successful - YourNintendo DS is now connected online and you can enjoy the Nintendo Wi-FiConnection features of the game! The connection test was not successful - Ifthe test was not successful, you will receive an error code. Error Code 51300: This means the security codeor network name entered into the Nintendo DS is not the same one the router isset to. To reach your connection settings, click "back" on the errorcode screen. Make sure to pay extra attention to the security key you find inyour router's settings and enter it exactly as it appears (the key is casesensitive). For all other error codes, go to the Nintendo website or contactcustomer support. If the lock icon is locked and red, Enter your router's WEP keyinto the Nintendo DS Select"OK," "Save Settings," and then "Yes." TheNintendo DS will run a connection test with your wireless router. Theconnection test was successful - Your Nintendo DS is now connected online andyou can enjoy the Nintendo Wi-Fi Connection features of the game! Theconnection test was not successful - If the test was not successful, you willreceive an error code. If the lock icon is locked and grey, and you wouldstill like to connect your Nintendo DS online, you will need to either changeyour router's security to WEP, or disable security entirely. Please note thatany changes you make will affect other devices that connect wirelessly to yourrouter.

With an online-capable game insertedinto your Nintendo DS, turn on your system and access the game's main menu. Access the Nintendo Wi-Fi Connection settings.(These settings are typically found by selecting "Nintendo WFC" fromthe game's main menu. For detailed directions, consult the manual for thegame.) At the Setup screen, tap"Nintendo Wi-Fi Connection Settings." Tap "Connection 1 None." Clickon "Search for an Access Point." TheNintendo DS will search for any wireless networks within range. Once it isfinished searching, it will display the names of all the wireless networks itfinds. Look for your wireless network. What to do next will depend on the"lock" icon you see next to your network on the Nintendo DS. If thelock icon that appears is unlocked and blue, Select "OK," "SaveSettings," and then "Yes." The Nintendo DS will run a connectiontest with your wireless router. The connection test was successful - YourNintendo DS is now connected online and you can enjoy the Nintendo Wi-FiConnection features of the game! The connection test was not successful - Ifthe test was not successful, you will receive an error code. Error Code 51300: This means the security codeor network name entered into the Nintendo DS is not the same one the router isset to. To reach your connection settings, click "back" on the errorcode screen. Make sure to pay extra attention to the security key you find inyour router's settings and enter it exactly as it appears (the key is casesensitive). For all other error codes, go to the Nintendo website or contactcustomer support. If the lock icon is locked and red, Enter your router's WEP keyinto the Nintendo DS Select"OK," "Save Settings," and then "Yes." TheNintendo DS will run a connection test with your wireless router. Theconnection test was successful - Your Nintendo DS is now connected online andyou can enjoy the Nintendo Wi-Fi Connection features of the game! Theconnection test was not successful - If the test was not successful, you willreceive an error code. If the lock icon is locked and grey, and you wouldstill like to connect your Nintendo DS online, you will need to either changeyour router's security to WEP, or disable security entirely. Please note thatany changes you make will affect other devices that connect wirelessly to yourrouter.

With an online-capable game insertedinto your Nintendo DS, turn on your system and access the game's main menu. Access the Nintendo Wi-Fi Connection settings.(These settings are typically found by selecting "Nintendo WFC" fromthe game's main menu. For detailed directions, consult the manual for thegame.) At the Setup screen, tap"Nintendo Wi-Fi Connection Settings." Tap "Connection 1 None." Clickon "Search for an Access Point." TheNintendo DS will search for any wireless networks within range. Once it isfinished searching, it will display the names of all the wireless networks itfinds. Look for your wireless network. What to do next will depend on the"lock" icon you see next to your network on the Nintendo DS. If thelock icon that appears is unlocked and blue, Select "OK," "SaveSettings," and then "Yes." The Nintendo DS will run a connectiontest with your wireless router. The connection test was successful - YourNintendo DS is now connected online and you can enjoy the Nintendo Wi-FiConnection features of the game! The connection test was not successful - Ifthe test was not successful, you will receive an error code. Error Code 51300: This means the security codeor network name entered into the Nintendo DS is not the same one the router isset to. To reach your connection settings, click "back" on the errorcode screen. Make sure to pay extra attention to the security key you find inyour router's settings and enter it exactly as it appears (the key is casesensitive). For all other error codes, go to the Nintendo website or contactcustomer support. If the lock icon is locked and red, Enter your router's WEP keyinto the Nintendo DS Select"OK," "Save Settings," and then "Yes." TheNintendo DS will run a connection test with your wireless router. Theconnection test was successful - Your Nintendo DS is now connected online andyou can enjoy the Nintendo Wi-Fi Connection features of the game! Theconnection test was not successful - If the test was not successful, you willreceive an error code. If the lock icon is locked and grey, and you wouldstill like to connect your Nintendo DS online, you will need to either changeyour router's security to WEP, or disable security entirely. Please note thatany changes you make will affect other devices that connect wirelessly to yourrouter.

With an online-capable game insertedinto your Nintendo DS, turn on your system and access the game's main menu. Access the Nintendo Wi-Fi Connection settings.(These settings are typically found by selecting "Nintendo WFC" fromthe game's main menu. For detailed directions, consult the manual for thegame.) At the Setup screen, tap"Nintendo Wi-Fi Connection Settings." Tap "Connection 1 None." Clickon "Search for an Access Point." TheNintendo DS will search for any wireless networks within range. Once it isfinished searching, it will display the names of all the wireless networks itfinds. Look for your wireless network. What to do next will depend on the"lock" icon you see next to your network on the Nintendo DS. If thelock icon that appears is unlocked and blue, Select "OK," "SaveSettings," and then "Yes." The Nintendo DS will run a connectiontest with your wireless router. The connection test was successful - YourNintendo DS is now connected online and you can enjoy the Nintendo Wi-FiConnection features of the game! The connection test was not successful - Ifthe test was not successful, you will receive an error code. Error Code 51300: This means the security codeor network name entered into the Nintendo DS is not the same one the router isset to. To reach your connection settings, click "back" on the errorcode screen. Make sure to pay extra attention to the security key you find inyour router's settings and enter it exactly as it appears (the key is casesensitive). For all other error codes, go to the Nintendo website or contactcustomer support. If the lock icon is locked and red, Enter your router's WEP keyinto the Nintendo DS Select"OK," "Save Settings," and then "Yes." TheNintendo DS will run a connection test with your wireless router. Theconnection test was successful - Your Nintendo DS is now connected online andyou can enjoy the Nintendo Wi-Fi Connection features of the game! Theconnection test was not successful - If the test was not successful, you willreceive an error code. If the lock icon is locked and grey, and you wouldstill like to connect your Nintendo DS online, you will need to either changeyour router's security to WEP, or disable security entirely. Please note thatany changes you make will affect other devices that connect wirelessly to yourrouter.

With an online-capable game insertedinto your Nintendo DS, turn on your system and access the game's main menu. Access the Nintendo Wi-Fi Connection settings.(These settings are typically found by selecting "Nintendo WFC" fromthe game's main menu. For detailed directions, consult the manual for thegame.) At the Setup screen, tap"Nintendo Wi-Fi Connection Settings." Tap "Connection 1 None." Clickon "Search for an Access Point." TheNintendo DS will search for any wireless networks within range. Once it isfinished searching, it will display the names of all the wireless networks itfinds. Look for your wireless network. What to do next will depend on the"lock" icon you see next to your network on the Nintendo DS. If thelock icon that appears is unlocked and blue, Select "OK," "SaveSettings," and then "Yes." The Nintendo DS will run a connectiontest with your wireless router. The connection test was successful - YourNintendo DS is now connected online and you can enjoy the Nintendo Wi-FiConnection features of the game! The connection test was not successful - Ifthe test was not successful, you will receive an error code. Error Code 51300: This means the security codeor network name entered into the Nintendo DS is not the same one the router isset to. To reach your connection settings, click "back" on the errorcode screen. Make sure to pay extra attention to the security key you find inyour router's settings and enter it exactly as it appears (the key is casesensitive). For all other error codes, go to the Nintendo website or contactcustomer support. If the lock icon is locked and red, Enter your router's WEP keyinto the Nintendo DS Select"OK," "Save Settings," and then "Yes." TheNintendo DS will run a connection test with your wireless router. Theconnection test was successful - Your Nintendo DS is now connected online andyou can enjoy the Nintendo Wi-Fi Connection features of the game! Theconnection test was not successful - If the test was not successful, you willreceive an error code. If the lock icon is locked and grey, and you wouldstill like to connect your Nintendo DS online, you will need to either changeyour router's security to WEP, or disable security entirely. Please note thatany changes you make will affect other devices that connect wirelessly to yourrouter.

1. At the Setup screen, tap "Nintendo Wi-Fi Connection Settings."
   
2. Tap "Connection 1 None."
   (Don't see "None" for Connection 1? To ensure any existing settings don't interfere with getting connected, tap the button, then choose "Clear Settings.")
3. Click on "Search for an Access Point."
   
4. The Nintendo DS will search for any wireless networks within range. Once it is finished searching, it will display the names of all the wireless networks it finds.

Once you have done this you may find next to your wi-fi, a lock this is what they mean:

No security - Your wireless network is unlocked.

1. Tap on your network name to select it.

1. Select "OK," "Save Settings," and then "Yes." The Nintendo DS will run a connection test with your wireless router.

• The connection test was successful - Your Nintendo DS is now connected online and you can enjoy the Nintendo Wi-Fi Connection features of the game!
• The connection test was not successful - If the test was not successful, you will receive an error code.
  
  • Error Code 51300: This means the security code or network name entered into the Nintendo DS is not the same one the router is set to. To reach your connection settings, click "back" on the error code screen. Make sure to pay extra attention to the security key you find in your router's settings and enter it exactly as it appears (the key is case sensitive).
  • All other error codes: Try our error code lookup where we have detailed information on many common error codes.

WEP security - Your wireless network is secured with WEP and requires a security key.

1. Enter your router's WEP key into the Nintendo DS Don't know your router's security key? Let us help you find your router's security key. Select the brand of your router below and we'll provide you with the default information for that brand! Linksys Netgear DLink Belkin Apple 2Wire All other brands Enter your WEP keyOn the upper screen you will be informed that "A security key is needed to connect to this access point." Enter your security key by tapping the empty field, and select "OK" when finished.
   

1. Select "OK," "Save Settings," and then "Yes." The Nintendo DS will run a connection test with your wireless router.

• The connection test was successful - Your Nintendo DS is now connected online and you can enjoy the Nintendo Wi-Fi Connection features of the game!
• The connection test was not successful - If the test was not successful, you will receive an error code.
  
  • Error Code 51300: This means the security code or network name entered into the Nintendo DS is not the same one the router is set to. To reach your connection settings, click "back" on the error code screen. Make sure to pay extra attention to the security key you find in your router's settings and enter it exactly as it appears (the key is case sensitive).
  • All other error codes: Try our error code lookup where we have detailed information on many common error codes.

WPA security - Your wireless network is secured with WPA and requires a security key.
The Nintendo DS and Nintendo DS Lite are not compatible with WPA security. If you would still like to connect your Nintendo DS online, you will need to either change your router's security to WEP, or disable security entirely. Please note that any changes you make will affect other devices that connect wirelessly to your router.

According to Nintendo's tech support website, error code 51300 means that the access point you are trying to connect to is not compatible with the Nintendo Wi-Fi connection. Try to find another access point and see if it will work then.

Hello
Error code 51300 is that your DS is unable to connect to the wireless network.
Please follow this link for the solution of how to fix from Nintendo themselves.
http://www.nintendo.com/consumer/wfc/en_na/ds/results.jsp?error_code=51300&system=ds&locale=en_us
Thanks

turn up the power and change the wireless channel in the wireless settings