Hello, you're dealing with the blue screen of death. In other words it's a problem with the hard drive.
Assuming you have windows, it is easiest to fix it if you have windows installation CD or USB. If you do, when you mount the CD/USB on your laptop you should find a button saying something between the lines of "Repair your computer", you just click that and that should fix the problem.
If you don't have a Windows CD/USB, you need to download repair software on other PC, put it on your CD/USB and mount it on your laptop.
I'm afraid there are no other ways if you get the blank screen even on safe mode. You might find other ways on the internet, but the repair software is easiest solution.
Also if you're trying to fix it yourself be very careful and do everything by the instructions, as few wrong moves may corrupt your data or ruin your hard drive completely.
I hope that was helpful, if you need any more help just let me know