Wifi problem asus x455l

[alf Njm]

I have asus laptop x455l that just serviced at shop , now the wifi is not working its only one bar when connected and sometime it got exclamination marks. My phone connect the same network but it just fine have full bar and no problems. I have done reinstall device , troubleshoot , reset bios and disable the device but its still not working

 

[ffg7]

if the laptop connected ok to your network before it was serviced then take it back to get them to correct the problem.

 

[alf Njm]

Thank you ffg7 for the fast reply
I actually found the problem by myself when i see that the cable for wifi in my mb is not connected