Mac book pro start up noise no screen purchased late 2013

Question

hey soo ,y yr old Mac book pro 15 retina late 2013 model I saw a post from support saying they r having issues with the sleep mode n not waking up.. Soo  I remember this happening n then I wiped the Mac with a cloth went over the keys n it shut off n did not come back on... Now I reset the pram bla bla went through all the trouble shooting stuff it makes start up noise now then nothing...

Answer 1

You may try to restart your computer in Safe mode by taking these steps:
- Click on the Apple sign() at the upper left corner of the Desktop, select 'Shut down' from a drop-down menu;
- Wait until your computer turns off, then press the Power button(⌽);
- Immediately after you hear the startup tone, press and hold the Shift(⇧) key. It should be held as soon as possible after the startup tone, but not before the tone;
- Release the Shift(⇧) key when you see a grey Apple sign() and the progress bar below;
This will force the system to perform several maintenance routines and load essential system software.
Once you've seen the Desktop, start a Disk Utility scan to detect and repair file system errors:
- Open Disk Utility application:
1. Click on Finder at the bottom of your Desktop;
2. Select Applications folder from Finder's left sidebar and then open Utilities folder (or press Command(⌘)-Shift(⇧)-U), double-click on Disk Utility icon;
- Choose your main hard drive from the left sidebar ('Macintosh HD', usually);
- Click on 'Verify Disc' at the bottom right corner, your Mac will perform a diagnostic test. Click on 'Repair Disk' if prompted to fix problems, or follow instructions given on the Disk Utility window;
- Once the routine finished, click on ""Verify Disc Permissions"", after it's done, click on 'Repair Disc Permissions';
- Wait until the process's finished and shut down your Mac, turn it back on in 30 seconds;