Question

PC turns on for about 10 seconds then shuts off

I have been using this PC for about 3 years now with no problems. I was gone all summer and when I came back I went to update the bios and it failed mid update. After this the computer would not turn on at all. I then proceeded to replace the bios chip and now the computer turns on for about 10 seconds allowing me to just get into the bios or just get to the login screen before it turns off again. I have tried replacing ram, and power supply, resetting the cmos and battery and also trying to turn on without any pci devices. Does anyone have any ideas on how to fix it, or is the motherboard just bricked?

My hardware is:
Intel 6600k
Hyper 212 cooler
Corsair RM750x
16 GB Corsair Vengeance 3000MHz
Nvidia GTX 1070
Asrock Z170M Extreme 4

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Answer
Sad to read this.

If a client brings in a PC they tried to replace the BIOS we find the motherboard is beyond recovery. Yes, the maker may have a service center but we don't repair motherboards beyond say a connector or simple repairs.

This model should NEVER need the BIOS chip replaced even if you fail to update.
Why? https://www.google.com/search?q=ASRock+Crashless+BIOS

I won't go over that feature as it's on the web.

My view here is you'll ask the maker "How much?" to swap that motherboard.

Also, next time, explore the BIOS recovery methods these boards have as I've rarely seen anyone but seasoned techs solder in a new BIOS without destroying the board.

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Dead motherboard?

So you believe the motherboard is dead? The bios chip is socketed not soldered so it was easy to replace

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Then your old BIOS should be installed.

And you use their CRASH FREE system to recover. I can not replace their support or documentation here.

The boards that we had to replace were ones with soldered in BIOS chips. The traces on boards today are fragile.

So my advice follows:

1. Put the old bios back. Use the maker's instructions on recovery.
2. Consider making the PC very small. We don't need drives, more than one stick of RAM, don't need that case or GPU to get a screen up and for recovery it may be the procedure of putting a file on the USB stick (I defer to the maker about that.)

Again, small as you can make it.

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Will try and report back

I will try this tonight and report back if it works or not

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PCB support

When you replaced the chip did you remove the MB from the case and fully support the rear of it to enable you to apply enough pressure to click the pins completely home ?. If you attempt it mounted on the stand-offs it is also easy to crack a track.

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Answer
Flip the Switch?

Looking at a closeup photo of your Asrock Z170M Extreme 4 on the ASRock website it appears that you have dual BIOS/UEFI chips and a Selector switch. Why not just flip the switch and run with the second BIOS/UEFI chip?

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