No picture no sound

1. Try another TV first if you have one. In less extreme instances, the communication between the television/HDMI cable and the console fails to interpret the PlayStation's output signal and reconcile it with the television's native output capacity. Normally, the PlayStation autodetects the display device output and adjusts accordingly. When this process fails, no visible output appears on the television. By replacing the HDMI cable or the television, a user may be able to access the PlayStation 4's Sound and Screen menu and manually set the video output settings to a configuration compatible with their preferred display device.

2. During bootup, try holding down the power for 7-10 seconds until it beeps.

3. Is your HDMI port damaged? IGN recently reported another solution for some HDMI issues. According to Chris Pereria, "As it turns out, a piece of metal in the HDMI port that should have been flush with the bottom of the port was sticking up. This prevented the HDMI cord from being plugged in all the way and damaged each of the cords (in identical fashion) that had been plugged in. The solution was to, simply enough, press the piece of metal down so that it was no longer in the way. With that done, the system now works as it should." Be aware that by doing this, your warranty may become void. Attempt at your own risk.

4. In more extreme cases, it appears a hardware failure is occurring within the PS4 which renders it completely nonfunctional. This appears to correspond with a pulsing blue light. No fix is known for this issue at this time.(This problem has occured with YouTuber SoldierKnowsBest.

5. Try to restore the PS4 in safe mode.