Wont play DS CARD

First before you can use the memory card on your DS lite you have to first use the DS lite to format the memory card before putting games this ensures that the game would recognise whatever games you then put on the memory card.
Hope this solution has been helpful?

Remove the flashcard from the Nintendo DS, the Nintendo DS
is loading the firmware from the flashcard, if the flashcard is removed the DS wil go to the clock sreen of the DS put another game cardridge in
DS to play a game.

Have you downloaded and installed the software you need to do this so the games will play
Download it here http://www.dsir4i.com/r4i-software.html
but make sure you leave it at the root of the card SEPERATELY FROM THE GAMES

JonnieC

2 weeks ago i bought a r4 adaptor with sd card 2 gb and 30 games on it.it was worked propely since today when ds displayed there is no ds card inserted.please halp me my kids kill me

my son's DS had the same problem this week. With the DS turned off, ,I pushed the game in and held it right down while turning the DS on. The game registered and I let go of the game and it clicked in to place. The next time I tried the game it registered straight away. Good luck!

lol really like u can. you can buy cards that let you do that but you need the rigth one and the one thats lets you actually play the ds game which can have problems due to the cards limits.. look up r4 but even then ds games wont always run and wont run fast... just mod a psp then you dont have to buy psp games.. the psp is so much better and can run psp games from its memory cards.. snes nes sega playstation one and more [girl says]it plays music and super nintendo..do me

You can play multiplayer games with a Nintendo DS Lite even if you don’t possess a copy of the game. If one of your friends has a multiplayer game card, they can use their Nintendo DS Lite as a host for the game session and you can join the multiplayer game.
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Things You'll Need:

• Nintendo DS Lite

Using One Card to Host the Game
1. Step 1 Look on the game’s packaging for the "Multiplayer" icon. If the game requires only one player to have a copy of the game, the icon will show two DS Lites: a DS Lite with a black screen transmitting waves to a DS Lite with a white screen. Below the two DS Lites is a range of numbers which indicates how many players the game can support.
   
2. Step 2 Put the game card in the Nintendo DS Lite that is acting as the host for the multiplayer game session and start it up.
   
3. Step 3 Have the other players turn on their systems. They will use the main menu screen to access the "DS Download Play" icon. They need to tap the icon to begin downloading the game information from the host DS Lite.
   
4. Step 4 Begin playing when all of the systems have finished downloading the game information from the host.
   
Multiple Cards for Multiple Players
5. Step 1 Look at the "Multiplayer" icon. If every player in the game session needs a copy of the game in order to play, the icon will show two DS Lites, both with black screens, transmitting waves toward each other. A range of numbers is under this graphic and indicates how many people can play at one time.
   
6. Step 2 Read the game's instruction manual on how to set up the game session. The steps required vary by company and sometimes by title within the same company.
   

*reposted from ehow.com

plug in the sd card and there should be 2 files of the game the nds and sav delete the sav file and it should work

Try getting the latest version of the firmware for ur ds. After u download the firmware, put ur card into card reader. Use computer to delete everything except ur games. Then put the firmware that you downloaded into the card. See if it works.

you have to press and hold select and press right,try game again and if it still wont play, just keep doing it till you get the format that it works on. i hope this helps