There could be a few reasons why the front USB header is not showing a notification or pop-up when plugged in. Here are some potential solutions to try:
1. Check device manager: Firstly, check Device Manager to ensure that the USB port is recognized correctly by your system. If it isn't, you may need to update the drivers for the USB controller by right-clicking it and choosing "Update Driver Software".
2. Enable notifications: If the USB port is recognized by your system, check your notification settings to ensure that USB devices are enabled to display notifications when they are plugged in. To do this, right-click the Windows Start menu, choose "Settings", click on "System", click on "Notifications & actions", and then under "Get notifications from these senders" make sure that "USB" is toggled on.
3. Swap cables: Try swapping out the cable or USB device that you are connecting to the front header. Some devices may not be recognized properly if there is a problem with the cable.
4. Check BIOS settings: Check your BIOS settings to ensure that the front USB port is enabled. To do this, restart your computer and press the key to enter the BIOS setup (usually F2 or Del). Look for settings related to USB or "Front panel USB".
5. Hardware issue: If the above solutions don't work, there may be a hardware issue with the USB header itself. Try connecting the USB device to a different USB port to see if it works normally there. If it does, it's likely a hardware issue with the front header and you may need to have it replaced.