S5 Black screen+blue light+vibrate

I have a Galaxy S5 that doesn't really turn on. When you press the power button a blue light pulses on the top left corner of the screen, and it starts quietly vibrating every 10 seconds or so.

I have tried taking out the battery, and holding down the power button and that didn't work. I have tried doing that and then plugging it in letting it fully charge, but it still does the same thing. I have tried pressing the power and volume down button, and that doesn't do anything either.

Any suggestions as to what could fix it? Thanks!

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

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crwdns2944067:02crwdne2944067:0:

Try press homebutton+powerbutton+volume down... maybe come download mode and you can try flash firmware... when not come is some hardware problem...

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Yeah, at this point I'm thinking the screen needs to be replaced.

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