Unfortunately, Nintendo has a fail-safe in their DS systems to discourage hackers. If any screen is disconnected at all, then the DS won't boot up. When you turn it on, does your green light come on at all? This is very important as to what the cause is, but it's most likely just a semi-disconnected screen cable.
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Email me at BobaFettFan.Jordan@Gmail.com for further info/help.
Unfortunately, Nintendo has a fail-safe in their DS systems to discourage hackers. If any screen is disconnected at all, then the DS won't boot up. When you turn it on, does your green light come on at all? This is very important as to what the cause is, but it's most likely just a semi-disconnected screen cable.
Email me at BobaFettFan.Jordan@Gmail.com for further info/help.