DSi says An error has occurred. Press and hold the Power Button to turn the system off. Please see the Nintendo DSi Operations Manual for help troubleshooting

you need to take your dsi to someone that knows about that stuff

If the following error message appeared in your DSi or DSI XL: "An error has occurred. Press and hold the POWER button to turn the system off...", It means that your Nintendo has been updated (by the Internet) to the version 1.4.2 (or 1.4.3) or you bought it updated. In this case your DSi XL or DSi doesn't work with any flashcard in the market.

If you don't have an updated flashcard, the solution requieres both "updating the kernel of your flashcard" and also "patching it". I hope it helps you.

Does the NDSi XL start after that?

Follow the instructions. If you don't have an operations manual, click on this link for a PDF copy: http://www.nintendo.com/consumer/downloads/DSi_English.pdf

therw is a factory reset code hold all the button at the same time

left,right,start,select..........

this will reset your dsi to factory settings

Every time I try to play a game the screens goes black and it says; an error has occurred. Press and hold the Power Button to turn the system off. Please see the Nintendo DSi Operations Manual for help troubleshooting. But I don't have the manual, ca anyone help me please.Thank you!

Look up a online manual. if it doesnt help take the game back, me personaly, i always get the 3 dollar warenty, lasts for a month

it says the same to me to ppl what could i do please help me

The DSi has a firewall. The DSi blocks your card. Not a new SD, but a new R4, mate.

there is nothing you can do, this is probably the reason they sold it in the first place