How to fix Samsung phone not turning on?

[Android Central Question]

I tried using all the key combinations but nothing! It's been showing a blue light that changes from dark to light blue at the top. It changed to red a few times but it stays blue. I can't remove battery, sd and sim are not in the phone.

 

[B. Diddy]

Welcome to Android Central! Which Samsung phone? The blue light is usually a bad sign, signifying some kind of hardware failure. If the phone isn't under warranty, then you'll have to bring it to a repair shop.

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