Hi JustinLi1234,
- Is it a desktop PC or a laptop?
- What version of Windows 10 and build are you running?
- Is the PC connected directly to the router or to the ethernet wall socket or via a hub / switch or other?
Temporarily disconnect from the network all other devices, wired and wireless, connect only with the PC, temporarily disconnect any type of device from the PC: UPS, USB / Ethernet Hub, Dock Station, Desk Hub or Bluetooth devices, then check if the disconnections are still present or not.