Tab 2 10.1 Samsung is stuck on the Samsung logo, how can I get it off of this?

[AC Question]

tab 2 10.1 tablet samsung

hi...i have a samsung tab 2 10.1,,,stuck on samsung logo,,,logo alternates from blue to white
i have held power button and down volume button and reset the device to factory specs,, nothing changed
also...reset/cleared cache....
what else can i do to restore this
thanks in advance