I bought an used Asus rog G74sx 3 months ago and everything worked just fine. I recently decided to clean the interior of it with alcohol. When I booted it up, I couldn't connect to Internet and in my device manager there was no network adapter. The icon that is usually wifi show a Ethernet connection (not connected). I can't find my network if I click on it. Maybe my chip broke? I am reinstalling Windows 10 as I write this.