ASUS Sonic Master laptop Wifi is not working well.

My ASUS laptop has been giving me a lot of headache since i bought it 3 months ago.

Firstly, it was freezing randomly which would entail me forcing a switch off.

Then it all of a sudden died and i hard to take it to ASUS service centre for repair as its still under warranty.

It worked again and I was told the panel had been changed.

But recently i noticed the freezing problem is still there and to now make matters worse i cannot use Wifi if the modem is not very close to the laptop (at least 2 inches close)

Now can someone please tell me what the problem is with the Wifi.

I am tired of this Asus laptop and i regret buying it.