PC Building

[karlosm84]

I ordered the components a few weeks ago and I finished assembling my PC last night. Windows 10 just finished updating this morning. The problem is that, all of a sudden, the PC restarts itself. And a red light turns on in the motherboard. It indicates that the PC does not recognize the CPU but the weird thing is that the PC runs normally (normally, excluding the spontaneous restart).  I don't know what to do so I'd like to see if anyone can give me a hand with this issue. I'd appreciate it a lot.

UPDATE: 

I forgot to mention the components: 

-Motherboard: MSI B650 Gaming Plus Wifi

-Power Supply: AZZA PSAZ 750W (80 Plus Bronze)

-Processor: AMD Ryzen 5 8600G with Radeon Graphics

-No GPU

[FunkZ]

What memory are you using with the 8600G IGP and which speed/timing setting, SPD, XMP or EXPO?

[BigAl01]

How often has the computer restarted itself?  If only once, it could be a Windows update completing.  If it has happened several times, that's something to look into.  After checking the memory concerns that @FunkZ brought up, you should also consider updating the motherboard's BIOS.  A quick thing to try is clearing the current BIOS to get the factory default settings (pull the power plug, remove the CMOS battery for several minutes and then reinstall the CMOS battery and connect the power plug).  If that doesn't help, then doing the BIOS update might be a next step - but I would be very worried about a restart during the BIOS update if it's a hardware issue.  If it's a Windows issue, the BIOS update would be done before booting in Windows.