First of all is the upper glass cracked or LCD or both ? if it is the LCD then good luck paying about 180 euro ! anyway if it is only the glass cracked then there is a chance you could do it by following this dude's steps https://www.youtube.com/watch?v=HHW-6Holz2o
Try holding home and power button for about 10 sec when the screen goes of let power button go and hold home till a cable shows up on screen then try restoring with itunes !
Its galaxy S5 !!! You need a lot of work to separate the upper glass from LCD and a lot more work you separate LCD from the frame !!! Just buy a full glass-LCD-frame replacement
If the phone was dropped down there is a chance that your phone's motherboard is causing it and only some India guys stay and worry about those kind of problems! otherwise is a faulty LCD ! Just try another one or get it replaced from where you bought it
