how to boot my onda vi30w?

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http://forums.androidcentral.com – i have onda vi30w ultimate. 4.0.3 8gb 8 inch touch screen 1ghz my tablet is not booting it stucks on android logo i charge it 100%.when i powered it on it shows the android logo but didnt boot. my brother was playing games on tablet then he turn it off.When i turned it on it stock on android logo. please help me.if you can.. (HowTos)