Action Replay DS has stopped working altogether.

Hello there.You can go to www.mubuy.com to buy a new one.I bought one last week.

I done this before and it works.
1. Start it up 2. After the "WARNING HEALTH AND SAFETY" (but before the Action Replay menu) Push "A"+"B"+"START"+"SELECT"
That should completely reset it. Happy Fixing :u)

if its one of the micro sd card action replay you can try to format it.make sure you get all of the data off for this take it back to the first time you got it from the store.

You will need to download the latest drivers for your device.
You can also download an unidentified device installer

it is over-coded or bricked. if over-coded just erase all the codes and don't use it for a month if that dose not work it is bricked.

You can't put an action replay with a TTDS in the same slot. The action replay cannot read all of the games the TTDS has.

i have had a similar prob it wiped all the games andm then i could not put more on because it went multi coloured when i tried so i hap to reset the entire thing to do so(source codejunkies):

Your Action Replay DS hardware may require resetting if you are experiencing any of the following problems:
* Code Manager PC software is reporting that Action Replay DS does not contain enough free space when it actually contains no codes.
* Code Manager PC software is reporting the console`s battery is low when it’s actually fully charged.
* Multicoloured bars are shown on the screen after you confirm the entry of a game ID when trying to manually enter codes. * You can use the Code Manager PC software without any problems until the Action Replay DS is connected via USB set to the update mode on the console, at which point Windows shows a run time error.
If you are experiencing any of these problems, please follow the steps below to reset the Action Replay DS hardware. Please beware that resetting the Action Replay DS hardware will not restore a default codelist, and any codes which are stored on the Action Replay DS will be erased.

1. With your console powered off insert the Action Replay DS
2. Hold down buttons A+B
3. Turn your console on
4. With A+B still held down, as soon as you see the Action Replay DS license screen press and hold down buttons START+SELECT so that you now have 4 buttons held down
5. Hold all 4 buttons down for around 10 seconds until the Action Replay DS loads to it`s home screen
6. If Action Replay DS doesn’t hold on the license screen for around 10 seconds when you do this, you may need to turn off and try again

copyed from code junkies

I think you must have dropped it and need to send it out to a professional to have it fixed.

ok if its for ds and the screens turn blank it crashed and thats all i no go and get a refund!!!

Sorry to tell you this but youre Action Replay DS Died (it Crashed) so you cant play it no more go return it for a refund and buy a new one!!!