PS4 Won't Turn On Diagnois

First, from your computer click the Download Link
to download the latest PS4 Update. Make sure you don't rename the downloaded file.
After download, plug your USB onto you Computer. Open the USB and make a folder inside named PS4 (you need to use Uppercase letters). Inside that folder create another folder named UPDATE. Then, just take the PS4UPDATE.PUP file you downloaded from the provided link and put it inside the UPDATE folder.
After that you just connect your USB with your PS4, and then from the Main Screen of your PS4 go to Settings -> System Software Update and just follow the instructions on-screen.
PS: Make sure you DO NOT turn off the console or remove the USB from the PS4 while the update is taking place, otherwise the system may be come temporarily or permanently damaged.

Download Link
http://dus01.ps4.update.playstation.net/update/ps4/image/2015_0625/sys_4f1c6d8597242ff346612773ffbc10ad/PS4UPDATE.PUP

Make sure your HDMI connection is secure, and in the right place. The PS4 has the same feature as the PS3, that it won't power on completely if it doesn't detect a video source.

1. Turn off PlayStation 3.
2. Hold the power button down; the system will turn on and turn off once again.
3. Once the System has been shutdown, re-press you finger until you hear 2 consecutive beeps
4. When you hear the 2 beeps take finger off power button.
5. You will be prompted to plug in your controller via USB and then hit the PS button
6. The Recovery menu will pop up.
7. Choose to 'Restore File System' and follow the process through.

For the recovery menu:

1. Turn off Playstation®3.
2. Hold the power button down; the system will turn on and turn off once again.
3. Once the System has been shutdown, re-press you finger until you hear 2 consecutive beeps
4. When you hear the 2 beeps take finger off power button.
5. You will be prompted to plug in your controller via USB and then hit the PS button
6. The Recovery menu will pop up

This will get you to the Recovery menu, all you have to do is click ReBuild. And just turn your ps3 off and on again.

The PS3 has a special Recovery Menu, which you can access in the following way:
1. Turn off Playstation 3.
2. Hold the power button down; the system will turn on and turn off once again.
3. Once the System has been shutdown, re-press you finger until you hear 2 consecutive beeps
4. When you hear the 2 beeps take finger off power button.
5. You will be prompted to plug in your controller via USB and then hit the PS button
6. The Recovery menu will pop up.

The current Recovery Menu supports:
• Restart System: Restarts the PLAYSTATION 3 System.
• Restore Default Settings: Reset all system settings back to default.
• Restore File System: Checks for corrupt/missing system files.
• Rebuild Database: Rebuilds the OS for the PLAYSTATION 3.
• Restore PS3 System: Fresh restore; Deletes everything and starts from Scratch.
• System Update: Update the PLAYSTATION 3 System

From the above select option "Rebuild Database". After PS3 has executed this DB rebuilding operation, the disc games will be visible again in the menu.