Windows 10: PC will only start after unplug it

Hello, I have the following problem: my computer only starts via the power button after I disconnect it from the power, wait a few seconds and then reconnect it to the power. If I shut down my computer normally and then try to start it again via the power button, it seems as if the power button does not react at all. The mainboard also lights up while the PC is switched off. When the computer is then switched on, everything runs properly. All the components of my PC are brand new, as I only recently put together a PC. These are the components of my computer:- Case: be quiet Silent Base 802-

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After Windows 10 update, PC con't start

Good news, pc is back and running.
zBook was on the right track in that the BIOS was corrupted. However, the solution suggested did not work.
Fortunately, after considerable digging, I found some information on the Gigabyte site. Following their suggestions, I was able to restore the primary BIOS from the backup BIOS. The whole process took less than 10 minutes.
Basically, I had to:

1. Shut off the computer. Unplug all connections to the motherboard except the VGA/DVI output and the keyboard.
2. Press the POWER button and HOLD it. The computer will start and then shutdown. After the shutdown, release the POWER button.
3. Press and release the POWER button. The BIOS will go into recovery mode. A BIOS recovery screen will appear and you need only to select from the options that are presented.

This was a simple solution and I am now up and running.
Thanks to all who provided suggestions.

 

Headphone is unplugged !!!

Since you have a Realtek software installed on your PC, we suggest that you follow the steps listed below to correct its setting:

• Open the Realtek HD Audio Manager.
• Select Connector Settings in the right side panel.
• Tick on the box beside Disable front panel jack detection.

Kindly update us with the results and if you have further queries, feel free to post back.

 

PC Build Steps

Ok just because I like steps i am going to create some steps. Please give me the stamp of approval/disapproval

• Install system in case
  • Remember to connect SSD and optical to same SATA ports on motherboard
• Turn on PC
• setup HDD
• run blend test in prime95 for 30-60 min
  • run realtemp at the same time

• While in Prime95 test
  • if CPU goes above 70c in RealTemp, I have a leaky CPU
  • if my system locks up or blue screens, there is an instability in the system somewhere
  • if my system does not lock up or blue screen, my CPU is not damaged and I am in the clear!

What do you guys think??