Re: onboard wireless card
no it wont be. well, if your getting disconnected from the network then its hardware. if your still connected and the internet is down then its either an isp or a modem/router problem.
just login to windows and disable the onboard wireless from there. you can have 2 wireless cards in at the same time anyway, shouldnt make a difference, just make sure the broken one isnt connected to a network so you can test it properly
Laptop spec: ASUS X53E, i5 2430m 2.4ghz, 3gb ram, 320gb hdd, intel hd graphics, usb 3.0