If your system is a brand new one then it must be under the warranty. Best move will be visit the vendor's shop and let them check the hardware.
Windows 10 Frequent WHEA errors & Reboots

I've been having trouble with restarts during gaming recently and I keep getting WHEA errors with my brand new Ryzen 7 5800x.
Critical errors include: "The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."
Errors include:
"A fatal hardware error has occurred.
Reported by component: Processor Core
Error Source: Machine Check Exception
Error Type: Cache Hierarchy Error
Processor APIC ID: 10
The details view of this entry contains further information.
EventData:
ErrorSource 3
ApicId 10
MCABank 0
MciStat 0xbe80080001010135
MciAddr 0x82b2b60a8
MciMisc 0xd01a0ffe00000000
ErrorType 9
TransactionType 1
Participation 256
RequestType 3
MemorIO 256
MemHierarchyLvl 1
Timeout 256
OperationType 256
Channel 256
Length 936
RawData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
I also get errors such as:
"A fatal hardware error has occurred.
Reported by component: Processor Core
Error Source: Machine Check Exception
Error Type: Bus/Interconnect Error
Processor APIC ID: 0
The details view of this entry contains further information.
EventData
ErrorSource 3
ApicId 0
MCABank 27
MciStat 0xfaa000000000080b
MciAddr 0x0
MciMisc 0xd01a0ffe00000000
ErrorType 10
TransactionType 256
Participation 0
RequestType 0
MemorIO 2
MemHierarchyLvl 3
Timeout 0
OperationType 256
Channel 256
Length 936
RawData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
"
Here is my component list:
https://pcpartpicker.com/list/qBpLVc
CPU is brand new, PSU is brand new. Temperatures seem to be fine when gaming, and restarts don't happen with every game. BIOS is on the latest version, display drivers are up to date. Honestly at a loss unless it's just an issue with my motherboard.
Any help would be greatly appreciated.
2 answers
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2022-01-24T03:35:50.567+00:00 Unfortunately there is no software to test only the motherboard (unless you've got Dell, HP, Lenovo)
The CPU can be tested however there can be false negatives.
If swap testing is available > swap the motherboard
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When you are overclocking any components: change back to default values.
This is a hardware problem: when updating the bios does not help: contact your systems manufacturer.
My Computer is crashing with this error code