This is not a hardware problem. Therefore, even if you return the PC for repair, the problem cannot be resolved.
This symptom occurs if the CPU is overloaded while the sound drive is carrying out processes. Especially at startup, the load on the CPU increases since "Welcome to Windows," PowerPanel and others are started simultaneously, and the CPU must handle multiple processes in parallel. For this reason, the symptom is obvious at startup. This symptom is not obvious unless more than one processing requires the CPU attention at the same time as startup.