Problem: Unable to turn on PlayStation 4 (PS4) Console may due to several reasons including: loose power cord, faulty power strip or outlet, problem in power supply, faulty power button or dust, insects and bugs.
Solution 1: Reconnect power cable
Step 1: Unplug power cable from PS4.
Step 2: Wait for at least 30 seconds.
Step 3: Plug power cable back into PS4 console.
Step 4: Press power button and see if this works.
Solution 2: Clean the dust and other dirt in PS4 console
Step 1: Open the top plate of PS4 Console.
Step 2: Blowing off the dust inside. Do not use wet cloth or rug.
Step 3: Press power button and see if this works.
Solution 3: Insert a disk into PS4 Console
Step 1: PS4 Console detects disk inserted and might start automatically.
Step 2: Plug the power cable.
Step 3: Slowly insert the disk to PS4 Console until it turns on.
Step 4: If it turned on, pull the disk out.
Solution 4: Rebuild PS4 database
Step 1: Connect controller to PS4 Console using USB cable.
Step 2: Press and hold power button until it makes second beep sound.
Step 3: Release power button to enter safe mode.
Step 4: Select Rebuild Database and wait for the process to finish.
Step 5: Press power button and see if this works.
Solution 5: Bring PS4 to Service Center
Step 1: Search for nearest official PlayStation repair centers.
Step 2: Have PS4 Console diagnosed and repaired.