Windows 10: PC losing power

Hallo,I made a new PC with the following componentsSU: Seasonic G12 GM-850 850WRAM: Corsair 32 GB DDR5-5600 KitSSD: SAMSUNG 980 PRO, 1 TB SSDMotherbord: ASUS PRIME X670-PCPU: AMD Ryzen 9 7900XWhen i bought al the components, i was waiting for the new AMD GPU Radeon 7900xtx to release.But for a month, i installed my old GPU in the system. a nvidia rtx 2070 super.With the nvidia GPU everything was working fine. but i just installed the AMD 7900 xtx when my problem started.On low intensity usage, everything is fine. but when i play some high demanding games my PC can co

:)

 

Lost Power, now PC won't boot. Powers on and clicks.

I had tried both of those steps. Neither worked. I have a replacement power supply on order. Should be here on Monday. Thanks for the suggestions.

 

Overclocking / Undervolting guide for Vega 56 or 64?

Here's a quick laundry list:

List of software to use for overclocking and testing
Examples:
Wattman (and how to find and use it, like an overview, including profiles)
Unigine Valley or Heaven (use this for quick testing while changing settings in Wattman and checking for stability / artifacts) ...just suggesting this
How to monitor cores / mem speeds and temps during testing (I've seen screen overlays, and others using GPUz)

Step-by step overclocking in Wattman
Fan speeds
Power limit
Temp limit
Voltages
Core speeds
Memory speeds

 

My PC was shutdown suddenly by power cut off so now it had some errors

Hi,

I understand your concern and will assist you to resolve the issue.

• 
  Have you updated all the Windows and optional updates?
  
• 
  Have you updated all the Drivers?
  
• 
  What is that exact error message?
  

I suggest you to follow the steps below and check if it helps.

Step 1: Run the
Power troubleshooter.

Windows 10 has a built-in troubleshooter to check and fix issues with power. I would suggest you to run this troubleshooter to check if the issue is with your Power.

Refer these steps:

• 
  Press Windows key +X, select
  Control panel.
  
• 
  Change the view by option
  on the top right to Large icons.
  
• 
  Click on troubleshooting
  and click on the view all option on the left panel.
  
• 
  Run the Power
  troubleshooter.
  

Step 2: Change the “Power plans” settings.

A power plan is a collection of hardware and system settings (like display, sleep, etc.) that manages how your PC uses power. The power plans you can use depend on the kind of PC you have.

http://windows.microsoft.com/en-us/windows/power-plans-faq#1TC=windows-8

Keep us posted on this issue so that we can assist you better.