[SOLVED] My PC Keeps Automatically Rebooting

[alexgontcho]

Recently built a new PC. At 1st I was having overheating issues with the CPU so I reapplied thermal paste and the heating issue was solved, however since this, I've been getting a red light on the CPU LED on the MOBO as well as a red light on the VGA LED but then those lights disappear when this PC is fully booted up and then im able to use my PC for a few minutes, sometimes a few hours before it reboots again. What can I do to resolve this?
Specs:
MSI B550M Mortar
Ryzen 7 3700x
RTX 3070TI
16 GB RAM DDR4 3200MHZ
Corsair RM750x

 

[Koekieezz]

Recently built a new PC. At 1st I was having overheating issues with the CPU so I reapplied thermal paste and the heating issue was solved, however since this, I've been getting a red light on the CPU LED on the MOBO as well as a red light on the VGA LED but then those lights disappear when this PC is fully booted up and then im able to use my PC for a few minutes, sometimes a few hours before it reboots again. What can I do to resolve this?
Specs:
MSI B550M Mortar
Ryzen 7 3700x
RTX 3070TI
16 GB RAM DDR4 3200MHZ
Corsair RM750x

if you could boot up to pc, try this:

• Disconnect from internet
• Uninstall gpu driver using DDU (clean and do not restart).
• Uninstall all the processors on device manager (should be 16 on yours) like this:
  
  
  
  
  
• Restart the pc to bios, and update to the latest bios(download, extract the files and copy it to flashdrive, plug it on top rear usb slot then reboot to bios and flash the bios). Then go to bios again after update and load default or optimized settings.
  
  
• boot up to windows and install the latest AMD Chipset driver, reboot and connect to internet.
  
  
• Install the latest nvidia driver.
  
  *do this all offline until reboot after installing amd chipset driver, also you may reboot to bios after all of this to set the XMP (and previous settings you did in the bios), make sure your ram is on slot 2 and 4. Download needed files (highlighted word) before doing step 1.
  
  also clean the ram contacts and the gpu contacts, then replug it.

Make sure the psu connected to the gpu is 1 pcie cable per 1 slot (use main cable, not the branches/split) like this: