Help Needed: Sony Xperia z2 tablet charging problems



My xperia z2 tablet would not power on. When I try to charge it (wall charger or USB) the charging red led would start indicating it gets the electricity. However at that point the Sony sign would show up and it would blink twice and start restarting.
And like this every 10 seconds.

While starting to perform hard reset, the tablet would vibrate three times and do nothing.

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