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Z390 Phantom Gaming-ITX/ac not starting

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owinfrey View Drop Down

Joined: 17 Dec 2019
Location: USA
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Post Options Post Options   Thanks (0) Thanks(0)   Quote owinfrey Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2019 at 10:28pm
Today, I experienced the same issue with my computer. It powers on for 30 seconds and then restart, endless loop. I found the Bios to the issue with my ASRock z390 phantom gaming 4-CB (yes.. cyberpower).

I don't have the means to downgrade the CPU from i7-9700kf to 8 series or the time, so here's what worked for me:

Reset the motherboad CMOS
1. remove the GPU
2. locate the cmos battery and remove
3. find the cmos jumper and short for 20 secs.
4. replace the the battery
5. replace the gpu
6. turn on computer. It will start in Cmos
7. set the time and date, save and exit
8. System should reboot into the os

Now you should be able to flash the bios.

I hope this work for others...
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