Help! My Asus Vivobook 15 Can't Connect to WiFi or Play Sound

It sounds like the first thing you should do is open the Device Manager and check the status of your WiFi card. Look for any warning signs like a yellow triangle or error codes (like code 10 or code 43). Sometimes, laptops with multiple vendors for drivers can be tricky, so make sure you have the correct driver installed—yours might have options from Realtek, Intel, or Mediatek.

If you've tried both Mediatek and Realtek drivers and nothing's worked, it might be worth double-checking if the WiFi card is properly recognized in Device Manager. Sometimes a fresh install can cause failure to recognize hardware properly. If you're stuck, there’s often helpful info in tech forums.

If you're seeing that yellow triangle, it usually means there's a problem with the driver. I’d recommend uninstalling the current driver and then trying to find the specific Intel driver, which might be what you need. You can usually find it on Intel's website. Good luck!