PC crashes a lot - Error codes: IRQL_NOT_LESS_OR_EQUAL" and "KMODE_EXCEPTION_NOT_HANDLED," among few others.

[Microsoft Windows]

My PC crashes and freezes a lot. I often see a blue screen with error messages like "IRQL_NOT_LESS_OR_EQUAL" and "KMODE_EXCEPTION_NOT_HANDLED," along with a few other errors.

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